# Getting full list of authors after first citation with biblatex-apa

The APA style requires that the first citation for 3 to 6(?) authors uses the full list of authors while subsequent citations use an abbreviated list of authors. This is implemented by biblatex-apa:

\documentclass{article}

\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=apa]{biblatex}

\addbibresource{biblatex-examples.bib}

\begin{document}

% full author list
\parencite{herrmann}

% abbreviated author list
\parencite{herrmann}

% I would like a full author list here
\parencite{herrmann}

% this should be abbreviated again
\parencite{herrmann}

\printbibliography
\end{document}


In some cases it would be interesting to get the full list of authors even in a subsequent citation. Is that possible? The ideal solution would be a switch that would cause all subsequent citations to be treated as first ones, so that only the second citation after the "switch" would be abbreviated.

This question is motivated by a question on SO where a user tries to do something like this in the context of csl and pandoc-citeproc. I have the hope that a biblatex based workflow is more flexible.

• Would you want this for all citations or just for a particular .bib entry? Also, I'm not sure I understand the "so that..." part of your ideal solution. – Alan Munn Aug 9 at 12:11
• @AlanMunn The ideal solution would affect for all citations. – Ralf Stubner Aug 9 at 12:13

## 1 Answer

biblatex-apa uses the test \ifciteseen to check if a citation should use the long or short form. This tracker can be reset completely with \citereset. biblatex-apa also defines an additional special tracker which can be reset with \citeresetapa (this tracker is only used in very special circumstances with shortauthor/shorteditor fields, so forgetting to reset it will do almost no harm in most use cases).

So if you issue

\citereset\citeresetapa


anywhere in your document all first citations after that line will use the long form and subsequent citations will be short again. This affects all entries alike.

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=apa]{biblatex}

\addbibresource{biblatex-examples.bib}

\begin{document}

% full author list
\parencite{herrmann}

\parencite{yoon}

% abbreviated author list
\parencite{herrmann}

\parencite{yoon}

% I would like a full author list here
\citereset\citeresetapa
\parencite{herrmann}

\parencite{yoon}

% this should be abbreviated again
\parencite{herrmann}

\parencite{yoon}

\printbibliography
\end{document}


The load-time package option citereset=<section level> lets you automatically execute \citereset at all headings of <section level>. So citereset=section would call \citereset at each \section. There is no analogous option for \citeresetapa.

If you only want to affect a particular citation, something like

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=apa]{biblatex}

\addbibresource{biblatex-examples.bib}

\makeatletter
\newcommand*{\longparencite}{%
\AtNextCite{\AtEachCitekey{%
\let\blx@imc@ifciteseen\@secondoftwo
\let\ifciteseen\blx@imc@ifciteseen}}%
\parencite}
\makeatother

\begin{document}

% full author list
\parencite{herrmann}

\parencite{yoon}

% abbreviated author list
\parencite{herrmann}

\parencite{yoon}

% I would like a full author list here
\longparencite{herrmann}

\parencite{yoon}

% this should be abbreviated again
\parencite{herrmann}

\parencite{yoon}

\printbibliography
\end{document}


might work better for you.

With this definition \longparencite locally pretends that the citation was not seen before, hence we get the long form. \longparencite does not affect other citations and at least with this definition \longparencite does count towards \ifciteseen in situations like \longparencite{herrmann}\parencite{herrmann} (that could be changed of course).

• Thanks. citereset=chapter is perfect. – Ralf Stubner Aug 9 at 14:54