Module talk:Footnotes/anchor id list

There has always been a problem with the {{harv}} and {{sfn}} families of templates: except that every link that is created by these templates is tested at creation, editors don't know if the link works. A remedy for that has been user-scripts like User:Ucucha/HarvErrors. But, not all editors use that script so broken harv links can go undetected for a long time. At the moment, there is prospective bot that would mark broken-link harv templates by adding {{broken footnote}} after the broken-link harv template.

I have another possible solution. I have created a lua module that extracts reference linking data from cs1|2 and vcite templates. I have modified Module:Footnotes/sandbox to use the extracted data to determine if:

the harv template does not have a matching citation template

more than one citation template matches the harv template

when either of these conditions exists, the harv template emits an error message.

harv errors
template	rendering
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Brown\|2020}}`	Black, Black & Brown 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Red\|2020}}`	Black, Black & Red 2020 harvnb error: multiple targets (2×): CITEREFBlackBlackRed2020 (help)
citation templates
`{{cite book \|title=Title \|last=Black \|last2=Black \|last3=Brown \|date=2020}}`	Black; Black; Brown (2020). Title.
`{{cite journal \|journal=Journal \|title=Title \|last=Black \|last2=Black \|last3=Red \|date=2020 \|ref=harv}}`	Black; Black; Red (2020). "Title". Journal. `{{cite journal}}`: Invalid `\|ref=harv` (help)
`{{citation \|title=Title \|editor-last=Black \|editor-last2=Black \|editor-last3=Red \|date=2020}}`	Black; Black; Red, eds. (2020), Title

The sandbox module collects various items from the citation templates in the article's wikitext and assembles them into a list of CITEREF anchors that each harv template can inspect:

when |ref=harv either explicitly (cs1) or implicitly (cs2), the sandbox module builds a CITEREF from the cs1|2 parameters:
name sources: |contributor=, |author=, |vauthors=, |editor= and |veditors=, and their aliases (where they exist)

date sources: |year=, |date=, |publicationdate=, and |publication-date= (in that order).
when |ref={{sfnref}} or |ref={{harvid}}, the sandbox module builds a CITEREF from parameters in those templates and adds the result to the list.
when |ref=CITEREF<name-date>, the sandbox module adds that text (absent the CITEREF prefix) to the list.
when |ref=<anchor-identifier-text>, the sandbox module adds that text to the list – to match a harv template's identical |ref=<anchor-identifier-text>
when |ref= is empty or omitted and |mode=cs2, the sandbox module acts as if |ref=harv
when |ref=none, the sandbox module skips the citation because CITEREF anchor creation specifically suppressed in cs1|2

Alas, there is a flaw. Because the sandbox module reads article wikitext, and because wrapper templates often set cs1|2 parameter values inside the template, so the sandbox module emits a false error message for wrapped templates ({{cite EB1911}} wraps {{cite encyclopedia}}:

false harv errors
template	rendering
`{{Harvard citation no brackets/sandbox\|Chisholm\|1911}}`	Chisholm 1911
citation templates
`{{Cite EB1911\|wstitle=Alfred the Great\|ref=harv}}`	Chisholm, Hugh, ed. (1911). "Alfred the Great" . Encyclopædia Britannica (11th ed.). Cambridge University Press. `{{cite encyclopedia}}`: Invalid `\|ref=harv` (help)

So that false error messages don't linger in an article, I have added |ignore-err= to the harv templates so that false error messages may be suppressed ({{cite DNB}} wraps {{cite encyclopedia}}:

suppressing false harv errors
template	rendering
`{{Harvard citation no brackets/sandbox\|Power\|1901}}`	Power 1901
`{{Harvard citation no brackets/sandbox\|Power\|1901\|ignore-err=yes}}`	Power 1901
citation templates
`{{Cite DNB\|first=D'Arcy\|last=Power\|pages=331–332\|supplement=1\|volume=1\|wstitle=Bucknill, John Charles \|ref=harv}}`	Power, D'Arcy (1901). "Bucknill, John Charles" . In Lee, Sidney (ed.). Dictionary of National Biography (1st supplement). Vol. 1. London: Smith, Elder & Co. pp. 331–332. `{{cite encyclopedia}}`: Invalid `\|ref=harv` (help)

author-name parameters

author-name parameters
template	rendering
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Orange\|2020}}`	Black, Black & Orange 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Yellow\|2020}}`	Black, Black & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|2020}}`	Black, Black & Green 2020
`{{Harvard citation no brackets/sandbox\|Black\|2020}}`	Black 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|2020}}`	Black & Black 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|Black\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|Brown\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Brown\|2020}}`	Brown 2020
`{{Harvard citation no brackets/sandbox\|Red\|Black\|2020}}`	Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Orange\|Black\|Black\|2020}}`	Orange, Black & Black 2020
`{{Harvard citation no brackets/sandbox\|Yellow\|Black\|Black\|Black\|2020}}`	Yellow et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Black\|Black\|Brown\|2020}}`	Green et al. 2020
author`n`-last parameters
`{{Cite book \|author1-last=Black \|author2-last=Black \|author3-last=Orange \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Orange (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
author-last`n` parameters
`{{Cite book \|author-last1=Black \|author-last2=Black \|author-last3=Yellow \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Yellow (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
misc less used author-name parameters
`{{Cite book \|surname=Black \|subject2=Black \|host3=Green \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one author-name parameters
`{{Cite book \|last=Black \|title=Title \|date=2020 \|ref=harv}}`	Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two author-name parameters
`{{Cite book \|last=Black \|last2=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four author-name parameters
`{{Cite book \|last=Black \|last2=Black \|last3=Green \|last4=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five author-name parameters
`{{Cite book \|last=Black \|last2=Black \|last3=Green \|last4=Brown \|last5=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green; Brown; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one vauthors-name
`{{Cite book \|vauthors=Brown \|title=Title \|date=2020 \|ref=harv}}`	Brown (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two vauthors-name
`{{Cite book \|vauthors=Red, Black \|title=Title \|date=2020 \|ref=harv}}`	Red, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
three vauthors-name
`{{Cite book \|vauthors=Orange,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Orange, Black, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four vauthors-name
`{{Cite book \|vauthors=Yellow,Black,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Yellow, Black, Black, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five vauthors-name
`{{Cite book \|vauthors=Green,Black,Black,Brown,Black \|title=Title \|date=2020 \|ref=harv}}`	Green, Black, Black, Brown, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

editor-name parameters

editor-name parameters
template	rendering
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Orange\|2020}}`	Black, Brown & Orange 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Yellow\|2020}}`	Black, Brown & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|2020}}`	Black, Brown & Green 2020
`{{Harvard citation no brackets/sandbox\|Red\|2020}}`	Red 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|2020}}`	Black & Brown 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|Black\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|Brown\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Orange\|2020}}`	Orange 2020
`{{Harvard citation no brackets/sandbox\|Red\|Brown\|2020}}`	Red & Brown 2020
`{{Harvard citation no brackets/sandbox\|Orange\|Brown\|Black\|2020}}`	Orange, Brown & Black 2020
`{{Harvard citation no brackets/sandbox\|Yellow\|Brown\|Black\|Black\|2020}}`	Yellow et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Brown\|Black\|Brown\|2020}}`	Green et al. 2020
editor`n`-last parameters
`{{Cite book \|editor1-last=Black \|editor2-last=Brown \|editor3-last=Orange \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Orange, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
editor-last`n` parameters
`{{Cite book \|editor-last1=Black \|editor-last2=Brown \|editor-last3=Yellow \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Yellow, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
misc editor-name parameters
`{{Cite book \|editor-surname=Black \|editor2=Brown \|editor3-surname=Green \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one editor-name parameter
`{{Cite book \|editor-last=Red \|title=Title \|date=2020 \|ref=harv}}`	Red (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|editor-last3=Green \|editor-last4=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green; Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|editor-last3=Green \|editor-last4=Brown \|editor-last5=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green; Brown; Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one veditors-name
`{{Cite book \|veditors=Orange \|title=Title \|date=2020 \|ref=harv}}`	Orange, ed. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two veditors-name
`{{Cite book \|veditors=Red, Brown \|title=Title \|date=2020 \|ref=harv}}`	Red, Brown, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
three veditors-name
`{{Cite book \|veditors=Orange,Brown ,Black \|title=Title \|date=2020 \|ref=harv}}`	Orange, Brown, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four veditors-name
`{{Cite book \|veditors=Yellow,Brown ,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Yellow, Brown, Black, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five veditors-name
`{{Cite book \|veditors=Green,Brown ,Black,Brown,Black \|title=Title \|date=2020 \|ref=harv}}`	Green, Brown, Black, Brown, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

contributor-name parameters

contributor-name parameters
template	rendering
`{{Harvard citation no brackets/sandbox\|Green\|2020}}`	Green 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|2020}}`	Green & Red 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|2020}}`	Green, Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|Black\|2020}}`	Green et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|Brown\|2020}}`	Green et al. 2020
contributor`n`-last parameters
`{{Cite book \|contributor1-last=Green \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
contributor-last`n` parameters
`{{Cite book \|contributor-last=Green \|contributor-last2=Red \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
contributor-surname parameters
`{{Cite book \|contributor-surname=Green \|contributor2-surname=Red \|contributor-surname3=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
four contributor-name parameters
`{{Cite book \|contributor=Green \|contributor2=Red \|contributor3=Black \|contributor4=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
five contributor-name parameters
`{{Cite book \|contributor1=Green \|contributor2=Red \|contributor3=Black \|contributor4=Brown \|contributor5=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black; Brown; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)

ref={{sfnref}} and |ref={{harvid}}

|ref={{sfnref}} and |ref={{harvid}}
template	rendering
`{{Harvard citation no brackets/sandbox\|Blue\|2020}}`	Blue 2020
`{{Harvard citation no brackets/sandbox\|Blue\|Red\|2020}}`	Blue & Red 2020
`{{Harvard citation no brackets/sandbox\|Blue\|Red\|Black\|2020}}`	Blue, Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Blue\|Red\|Black\|Black\|2020}}`	Blue et al. 2020
`{{Harvard citation no brackets/sandbox\|''Magazine Title''\|2020}}`	Magazine Title 2020
{{harvid}}
`{{Cite book \|title=Title \|ref={{harvid\|Blue\|2020}}}}`	Title.
{{Harvid}}
`{{Cite book \|title=Title \|ref={{Harvid\|Blue\|Red\|2020}}}}`	Title.
{{sfnref}}
`{{Cite book \|title=Title \|ref={{sfnref\|Blue\|Red\|Black\|2020}}}}`	Title.
{{SfnRef}}
`{{Cite book \|title=Title \|ref={{SfnRef\|Blue\|Red\|Black\|Black\|2020}}}}`	Title.
{{SfnRef}} – magazine title
`{{Cite book \|title=Title \|ref={{SfnRef\|''Magazine Title''\|2020}}}}`	Title.

|ref=CITEREF...

|ref=CITEREF...
template	rendering
`{{Harvard citation no brackets/sandbox\|custom citeref text}}`	custom citeref text
\|ref=CITEREF...
`{{Cite book \|title=Title \|ref=CITEREFcustom citeref text}}`	Title.

|ref=custom text in {{harvnb}}

|ref=custom text in {{harvnb}}
template	rendering
`{{Harvard citation no brackets/sandbox\|Violet\|2020\|ref=1337+S3CRE7+C0D3}}`	Violet 2020
\|ref=1337+S3CRE7+C0D3
`{{Cite book \|title=Title \|ref=1337+S3CRE7+C0D3}}`	Title.

single date parameters

single date parameters
template	rendering
`{{Harvard citation no brackets/sandbox\|Violet\|Black\|2020}}`	VioletBlack 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Brown\|2020}}`	Violet & Brown 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Red\|2020}}`	Violet & Red 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Orange\|2020}}`	Violet & Orange 2020
\|year=
`{{Cite book \|year=2020 \|last=Violet \|last2=Black \|title=Title \|ref=harv}}`	Violet; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|date=
`{{Cite book \|date=2020 \|last=Violet \|last2=Brown \|title=Title \|ref=harv}}`	Violet; Brown (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|publication-date=
`{{Cite book \|publication-date=2020 \|last=Violet \|last2=Red \|title=Title \|ref=harv}}`	Violet; Red (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|publicationdate=
`{{Cite book \|publicationdate=2020 \|last=Violet \|last2=Orange \|title=Title \|ref=harv}}`	Violet; Orange (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help); Unknown parameter `\|publicationdate=` ignored (`\|publication-date=` suggested) (help)

multiple date parameters

multiple date parameters
template	rendering
`{{Harvard citation no brackets/sandbox\|Violet\|Yellow\|2020}}`	Violet & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Green\|2020}}`	Violet & Green 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Blue\|2020}}`	Violet & Blue 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Violet\|2020}}`	Violet & Violet 2020
\|year= and \|date=
`{{Cite book \|year=2020 \|date=2020 \|last=Violet \|last2=Yellow \|title=Title \|ref=harv}}`	Violet; Yellow (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)CS1 maint: date and year (link)
\|year= and \|publication-date=
`{{Cite book \|date=2020 \|publication-date=2000 \|last=Violet \|last2=Green\|title=Title \|ref=harv}}`	Violet; Green (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help)
\|date= and \|publication-date=
`{{Cite book \|date=2020 \|publication-date=2000 \|last=Violet \|last2=Blue \|title=Title \|ref=harv}}`	Violet; Blue (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help)
\|year= and \|date= and \|publicationdate=
`{{Cite book \|year=2020 \|date=2020 \|publicationdate=2000 \|last=Violet \|last2=Violet \|title=Title \|ref=harv}}`	Violet; Violet (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help); Unknown parameter `\|publicationdate=` ignored (`\|publication-date=` suggested) (help)CS1 maint: date and year (link)

date formats

date formats
template	rendering
`{{Harvard citation no brackets/sandbox\|Gray\|Black\|2010–2020}}`	Gray & Black 2010–2020
`{{Harvard citation no brackets/sandbox\|Gray\|Black\|1998–99}}`	Gray & Black 1998–99
`{{Harvard citation no brackets/sandbox\|Gray\|Brown\|2020}}`	Gray & Brown 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Red\|Black\|2020}}`	Gray, Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Red\|Brown\|2020}}`	Gray, Red & Brown 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Orange\|Black\|n.d.}}`	Gray, Orange & Black n.d.
`{{Harvard citation no brackets/sandbox\|Gray\|Orange\|Brown\|nd}}`	Gray, Orange & Brown nd
`{{Harvard citation no brackets/sandbox\|Gray\|Yellow\|c. 2020}}`	Gray & Yellow c. 2020
YYYY–YYYY
`{{Cite book \|date=2010–2020 \|last=Gray \|last2=Black \|title=Title \|ref=harv}}`	Gray; Black (2010–2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
YYYY–YY
`{{Cite book \|date=1998–99 \|last=Gray \|last2=Black \|title=Title \|ref=harv}}`	Gray; Black (1998–99). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
YYYY-MM-DD
`{{Cite book \|date=2020-03-05 \|last=Gray \|last2=Brown \|title=Title \|ref=harv}}`	Gray; Brown (2020-03-05). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
dmy
`{{Cite book \|date=5 March 2020 \|last=Gray \|last2=Red \|last3=Black \|title=Title \|ref=harv}}`	Gray; Red; Black (5 March 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
mdy
`{{Cite book \|date=5 March 2020 \|last=Gray \|last2=Red \|last3=Brown \|title=Title \|ref=harv}}`	Gray; Red; Brown (5 March 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
n.d.
`{{Cite book \|date=n.d. \|last=Gray \|last2=Orange \|last3=Black \|title=Title \|ref=harv}}`	Gray; Orange; Black (n.d.). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
nd
`{{Cite book \|date=nd \|last=Gray \|last2=Orange \|last3=Brown \|title=Title \|ref=harv}}`	Gray; Orange; Brown (nd). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
c. YYYY
`{{Cite book \|date=c. 2020 \|last=Gray \|last2=Yellow \|title=Title \|ref=harv}}`	Gray; Yellow (c. 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

date formats with CITEREF disambiguation

date formats with CITEREF disambiguation
template	rendering
`{{Harvard citation no brackets/sandbox\|Gray\|Black\|2010–2020a}}`	Gray & Black 2010–2020a
`{{Harvard citation no brackets/sandbox\|Gray\|Black\|1998–99a}}`	Gray & Black 1998–99a
`{{Harvard citation no brackets/sandbox\|Gray\|Red\|Black\|2020a}}`	Gray, Red & Black 2020a
`{{Harvard citation no brackets/sandbox\|Gray\|Red\|Brown\|2020a}}`	Gray, Red & Brown 2020a
`{{Harvard citation no brackets/sandbox\|Gray\|Orange\|Black\|n.d.a}}`	Gray, Orange & Black n.d.a
`{{Harvard citation no brackets/sandbox\|Gray\|Orange\|Brown\|nda}}`	Gray, Orange & Brown nda
`{{Harvard citation no brackets/sandbox\|Gray\|Yellow\|c. 2020a}}`	Gray & Yellow c. 2020a
YYYY–YYYY
`{{Cite book \|date=2010–2020a \|last=Gray \|last2=Black \|title=Title \|ref=harv}}`	Gray; Black (2010–2020a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
YYYY–YY
`{{Cite book \|date=1998–99a \|last=Gray \|last2=Black \|title=Title \|ref=harv}}`	Gray; Black (1998–99a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
dmy
`{{Cite book \|date=5 March 2020a \|last=Gray \|last2=Red \|last3=Black \|title=Title \|ref=harv}}`	Gray; Red; Black (5 March 2020a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
mdy
`{{Cite book \|date=5 March 2020a \|last=Gray \|last2=Red \|last3=Brown \|title=Title \|ref=harv}}`	Gray; Red; Brown (5 March 2020a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
n.d.
`{{Cite book \|date=n.d.a \|last=Gray \|last2=Orange \|last3=Black \|title=Title \|ref=harv}}`	Gray; Orange; Black (n.d.a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
nd
`{{Cite book \|date=nda \|last=Gray \|last2=Orange \|last3=Brown \|title=Title \|ref=harv}}`	Gray; Orange; Brown (nda). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
c. YYYY
`{{Cite book \|date=c. 2020a \|last=Gray \|last2=Yellow \|title=Title \|ref=harv}}`	Gray; Yellow (c. 2020a). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

date from {{date}}

date from {{date}}
template	rendering
`{{Harvard citation no brackets/sandbox\|Gray\|Green\|2020}}`	Gray & Green 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Blue\|2020}}`	Gray & Blue 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Violet\|2020}}`	Gray & Violet 2020
`{{Harvard citation no brackets/sandbox\|Gray\|Gray\|2020}}`	Gray & Gray 2020
`{{Harvard citation no brackets/sandbox\|Gray\|White\|2020}}`	Gray & White 2020
dmy
`{{Cite book \|date={{date\|5 March 2020}} \|last=Gray \|last2=Green \|title=Title \|ref=harv}}`	Gray; Green (5 March 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
dmy → ymd
`{{Cite book \|date={{DATEtoMOS\|5 Mar 2020\|ISO}} \|last=Gray \|last2=Blue \|title=Title \|ref=harv}}`	Gray; Blue (2020-03-05). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
mdy
`{{Cite book \|date={{FormatDate\|March 5, 2020\|MDY}} \|last=Gray \|last2=Violet \|title=Title \|ref=harv}}`	Gray; Violet (March 5, 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
mdy → dmy
`{{Cite book \|date={{ISOtodmymdy\|Mar 5, 2020\|DMY}} \|last=Gray \|last2=Gray \|title=Title \|ref=harv}}`	Gray; Gray (5 March 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
ymd
`{{Cite book \|date={{ISOtoMOS\|2020-03-05}} \|last=Gray \|last2=White \|title=Title \|ref=harv}}`	Gray; White (5 March 2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

cite LSA

{{cite LSA}}
template	rendering
`{{Harvard citation no brackets/sandbox\|White\|2020}}`	White 2020
CITEREF uses \|last= and \|year= always; \|ref= not supported
`{{cite LSA \|year=2020 \|last=White \|first=First \|title=Title}}`	Template:Cite LSA

vcite templates

vcite templates
template	rendering
`{{Harvard citation no brackets/sandbox\|White\|Black\|2020\|ref=WhiteBlack2020}}`	White & Black 2020
`{{Harvard citation no brackets/sandbox\|White\|Brown\|2020}}`	White & Brown 2020
`{{Harvard citation no brackets/sandbox\|White\|Red\|2020\|ref=WhiteRed2020}}`	White & Red 2020
using \|ref=
`{{vcite book \|year=2020 \|author=White, Black \|title=Title \|ref=WhiteBlack2020}}`	Template:Vcite book
using \|harvid= (makes CITEREF...)
`{{vancite book \|year=2020 \|author=White, Brown \|title=Title \|harvid=WhiteBrown2020}}`	Template:Vancite book
using \|ref= and \|harvid=
`{{vcite book \|year=2020 \|author=White, Red \|title=Title \|ref=WhiteOrange2020 \|harvid=WhiteRed2020}}`	Template:Vcite book

harvc

harvc
template	rendering
`{{Harvard citation no brackets/sandbox\|George\|Read\|Johnson\|Ferber\|1957}}`	George et al. 1957
`{{Harvard citation no brackets/sandbox\|Stefferud\|1957\|ref=CITEREFStefferud preface}}`	Stefferud 1957
{{harvc}} templates
`{{harvc/sandbox \|last=George \|first=Ernest J. \|last2=Read \|last3=Johnson \|last4=Ferber \|year=1957 \|contribution=Shelterbelts and Windbreaks \|url=//archive.org/stream/yoa1957#page/n785/mode/1up \|in=Stefferud}}`	George, Ernest J.; Read; Johnson; Ferber. "Shelterbelts and Windbreaks". In Stefferud (1957).
`{{harvc/sandbox \|last=Stefferud \|first=A.\|year=1957 \|id=CITEREFStefferud preface \|c=Preface \|url=//archive.org/stream/yoa1957#page/n7/mode/1up \|in=Stefferud}}`	Stefferud, A. Preface. In Stefferud (1957).
cs1\|2 templates
`{{cite book \|title=Soil: The Yearbook of Agriculture 1957 \|editor-last=Stefferud \|editor-first=Alfred \|year=1957 \|publisher=United States Department of Agriculture \|url=//archive.org/stream/yoa1957#page/n2/mode/1up \|oclc=704186906 \|ref=harv}}`	Stefferud, Alfred, ed. (1957). Soil: The Yearbook of Agriculture 1957. United States Department of Agriculture. OCLC 704186906. `{{cite book}}`: Invalid `\|ref=harv` (help)

harvc with |anchor-year=
template	rendering
`{{Harvard citation no brackets/sandbox\|Hunt \|1995a}}`	Hunt 1995a
`{{Harvard citation no brackets/sandbox\|Hunt \|1995b}}`	Hunt 1995b
{{harvc}} templates
`{{harvc/sandbox \|in=McMillan \|in2=Horobin \|last=Hunt \|first=David \|c=Appendix I Names and synonyms of the species, subspecies and interspecific hybrids \|year=1995 \|anchor-year=1995a \|mode=cs2 \|nb=yes}}`	Hunt, David (1995a), "Appendix I Names and synonyms of the species, subspecies and interspecific hybrids", in McMillan & Horobin 1995
`{{harvc/sandbox \|in=McMillan \|in2=Horobin \|last=Hunt \|first=David \|c=Appendix III Excerpts from a Brazilian diary \|year=1995 \|anchor-year=1995b \|mode=cs2 \|nb=yes}}`	Hunt, David (1995b), "Appendix III Excerpts from a Brazilian diary", in McMillan & Horobin 1995
cs1\|2 template
`{{Citation \|last=McMillan \|first=A. J. S. \|last2=Horobin \|first2=J. F. \|year=1995 \|title=Christmas Cacti: The Genus ''Schlumbergera'' and Its Hybrids \|edition=p/b \|publication-place=Sherbourne, Dorset, UK \|publisher=David Hunt \|isbn=978-0-9517234-6-3}}`	McMillan, A. J. S.; Horobin, J. F. (1995), Christmas Cacti: The Genus Schlumbergera and Its Hybrids (p/b ed.), Sherbourne, Dorset, UK: David Hunt, ISBN 978-0-9517234-6-3

template	rendering
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Orange\|2020}}`	Black, Black & Orange 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Yellow\|2020}}`	Black, Black & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|2020}}`	Black, Black & Green 2020
`{{Harvard citation no brackets/sandbox\|Black\|2020}}`	Black 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|2020}}`	Black & Black 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|Black\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Black\|Black\|Green\|Brown\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Brown\|2020}}`	Brown 2020
`{{Harvard citation no brackets/sandbox\|Red\|Black\|2020}}`	Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Orange\|Black\|Black\|2020}}`	Orange, Black & Black 2020
`{{Harvard citation no brackets/sandbox\|Yellow\|Black\|Black\|Black\|2020}}`	Yellow et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Black\|Black\|Brown\|2020}}`	Green et al. 2020
author`n`-last parameters
`{{Cite book \|author1-last=Black \|author2-last=Black \|author3-last=Orange \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Orange (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
author-last`n` parameters
`{{Cite book \|author-last1=Black \|author-last2=Black \|author-last3=Yellow \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Yellow (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
misc less used author-name parameters
`{{Cite book \|surname=Black \|subject2=Black \|host3=Green \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one author-name parameters
`{{Cite book \|last=Black \|title=Title \|date=2020 \|ref=harv}}`	Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two author-name parameters
`{{Cite book \|last=Black \|last2=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four author-name parameters
`{{Cite book \|last=Black \|last2=Black \|last3=Green \|last4=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five author-name parameters
`{{Cite book \|last=Black \|last2=Black \|last3=Green \|last4=Brown \|last5=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Black; Green; Brown; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one vauthors-name
`{{Cite book \|vauthors=Brown \|title=Title \|date=2020 \|ref=harv}}`	Brown (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two vauthors-name
`{{Cite book \|vauthors=Red, Black \|title=Title \|date=2020 \|ref=harv}}`	Red, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
three vauthors-name
`{{Cite book \|vauthors=Orange,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Orange, Black, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four vauthors-name
`{{Cite book \|vauthors=Yellow,Black,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Yellow, Black, Black, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five vauthors-name
`{{Cite book \|vauthors=Green,Black,Black,Brown,Black \|title=Title \|date=2020 \|ref=harv}}`	Green, Black, Black, Brown, Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

template	rendering
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Orange\|2020}}`	Black, Brown & Orange 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Yellow\|2020}}`	Black, Brown & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|2020}}`	Black, Brown & Green 2020
`{{Harvard citation no brackets/sandbox\|Red\|2020}}`	Red 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|2020}}`	Black & Brown 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|Black\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Black\|Brown\|Green\|Brown\|2020}}`	Black et al. 2020
`{{Harvard citation no brackets/sandbox\|Orange\|2020}}`	Orange 2020
`{{Harvard citation no brackets/sandbox\|Red\|Brown\|2020}}`	Red & Brown 2020
`{{Harvard citation no brackets/sandbox\|Orange\|Brown\|Black\|2020}}`	Orange, Brown & Black 2020
`{{Harvard citation no brackets/sandbox\|Yellow\|Brown\|Black\|Black\|2020}}`	Yellow et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Brown\|Black\|Brown\|2020}}`	Green et al. 2020
editor`n`-last parameters
`{{Cite book \|editor1-last=Black \|editor2-last=Brown \|editor3-last=Orange \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Orange, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
editor-last`n` parameters
`{{Cite book \|editor-last1=Black \|editor-last2=Brown \|editor-last3=Yellow \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Yellow, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
misc editor-name parameters
`{{Cite book \|editor-surname=Black \|editor2=Brown \|editor3-surname=Green \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one editor-name parameter
`{{Cite book \|editor-last=Red \|title=Title \|date=2020 \|ref=harv}}`	Red (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|editor-last3=Green \|editor-last4=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green; Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five editor-name parameters
`{{Cite book \|editor-last=Black \|editor-last2=Brown \|editor-last3=Green \|editor-last4=Brown \|editor-last5=Black \|title=Title \|date=2020 \|ref=harv}}`	Black; Brown; Green; Brown; Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
one veditors-name
`{{Cite book \|veditors=Orange \|title=Title \|date=2020 \|ref=harv}}`	Orange, ed. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
two veditors-name
`{{Cite book \|veditors=Red, Brown \|title=Title \|date=2020 \|ref=harv}}`	Red, Brown, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
three veditors-name
`{{Cite book \|veditors=Orange,Brown ,Black \|title=Title \|date=2020 \|ref=harv}}`	Orange, Brown, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
four veditors-name
`{{Cite book \|veditors=Yellow,Brown ,Black,Black \|title=Title \|date=2020 \|ref=harv}}`	Yellow, Brown, Black, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
five veditors-name
`{{Cite book \|veditors=Green,Brown ,Black,Brown,Black \|title=Title \|date=2020 \|ref=harv}}`	Green, Brown, Black, Brown, Black, eds. (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)

template	rendering
`{{Harvard citation no brackets/sandbox\|Green\|2020}}`	Green 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|2020}}`	Green & Red 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|2020}}`	Green, Red & Black 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|Black\|2020}}`	Green et al. 2020
`{{Harvard citation no brackets/sandbox\|Green\|Red\|Black\|Brown\|2020}}`	Green et al. 2020
contributor`n`-last parameters
`{{Cite book \|contributor1-last=Green \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
contributor-last`n` parameters
`{{Cite book \|contributor-last=Green \|contributor-last2=Red \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
contributor-surname parameters
`{{Cite book \|contributor-surname=Green \|contributor2-surname=Red \|contributor-surname3=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
four contributor-name parameters
`{{Cite book \|contributor=Green \|contributor2=Red \|contributor3=Black \|contributor4=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)
five contributor-name parameters
`{{Cite book \|contributor1=Green \|contributor2=Red \|contributor3=Black \|contributor4=Brown \|contributor5=Black \|contribution=Preface \|author=Author \|title=Title \|date=2020 \|ref=harv}}`	Green; Red; Black; Brown; Black (2020). Preface. Title. By Author. `{{cite book}}`: `\|author=` has generic name (help); Invalid `\|ref=harv` (help)

template	rendering
`{{Harvard citation no brackets/sandbox\|Violet\|Black\|2020}}`	VioletBlack 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Brown\|2020}}`	Violet & Brown 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Red\|2020}}`	Violet & Red 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Orange\|2020}}`	Violet & Orange 2020
\|year=
`{{Cite book \|year=2020 \|last=Violet \|last2=Black \|title=Title \|ref=harv}}`	Violet; Black (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|date=
`{{Cite book \|date=2020 \|last=Violet \|last2=Brown \|title=Title \|ref=harv}}`	Violet; Brown (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|publication-date=
`{{Cite book \|publication-date=2020 \|last=Violet \|last2=Red \|title=Title \|ref=harv}}`	Violet; Red (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)
\|publicationdate=
`{{Cite book \|publicationdate=2020 \|last=Violet \|last2=Orange \|title=Title \|ref=harv}}`	Violet; Orange (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help); Unknown parameter `\|publicationdate=` ignored (`\|publication-date=` suggested) (help)

template	rendering
`{{Harvard citation no brackets/sandbox\|Violet\|Yellow\|2020}}`	Violet & Yellow 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Green\|2020}}`	Violet & Green 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Blue\|2020}}`	Violet & Blue 2020
`{{Harvard citation no brackets/sandbox\|Violet\|Violet\|2020}}`	Violet & Violet 2020
\|year= and \|date=
`{{Cite book \|year=2020 \|date=2020 \|last=Violet \|last2=Yellow \|title=Title \|ref=harv}}`	Violet; Yellow (2020). Title. `{{cite book}}`: Invalid `\|ref=harv` (help)CS1 maint: date and year (link)
\|year= and \|publication-date=
`{{Cite book \|date=2020 \|publication-date=2000 \|last=Violet \|last2=Green\|title=Title \|ref=harv}}`	Violet; Green (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help)
\|date= and \|publication-date=
`{{Cite book \|date=2020 \|publication-date=2000 \|last=Violet \|last2=Blue \|title=Title \|ref=harv}}`	Violet; Blue (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help)
\|year= and \|date= and \|publicationdate=
`{{Cite book \|year=2020 \|date=2020 \|publicationdate=2000 \|last=Violet \|last2=Violet \|title=Title \|ref=harv}}`	Violet; Violet (2020). Title (published 2000). `{{cite book}}`: Invalid `\|ref=harv` (help); Unknown parameter `\|publicationdate=` ignored (`\|publication-date=` suggested) (help)CS1 maint: date and year (link)