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On the request of a publisher, I am trying to change from Chicago style bibliography to APA style. I had this working fine:

\usepackage[backend=biber,authordate]{biblatex-chicago}

I have tried this:

\usepackage[backend=biber,authordate,style=apa]{biblatex}

It fails with 

! Package xkeyval Error: `authordate' undefined in families `blx@opt@pre'.

I remove authordate:

\usepackage[backend=biber,style=apa]{biblatex}

It compiles first, but then after I ran Biber, it fails with

! Undefined control sequence.
<argument> \mkbibdateapalongextra 
                               {year}{month}{day}\iffieldundef {endyear}{...

Example:

\documentclass[11pt,a4paper]{article}
\usepackage{color}
\usepackage{graphicx}
\usepackage[hidelinks]{hyperref}
\usepackage[UKenglish]{babel}
\usepackage[lf]{venturis}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
% \usepackage[backend=biber,authordate]{biblatex-chicago} % works
\usepackage[backend=biber,style=apa]{biblatex} % doesn't work

\begin{filecontents*}{foo.bib} 
@article{denning2010computation,
    AUTHOR      = {Denning, Peter J.},
    TITLE       = {What is Computation?},
    JOURNAL     = {Ubiquity},
    YEAR        = {2010},
    DOI         = {10.1145/1880066.1880067}
}
\end{filecontents*}
\addbibresource{foo.bib}

\usepackage{csquotes}
\usepackage{tabularx}
\usepackage{epigraph}
\usepackage[shrink=10, babel=true]{microtype}   

\begin{document}
foo \autocite{denning2010computation}
\printbibliography
\end{document}
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1 Answers1

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This is a duplicate. To fix the issue, one has to add this line:

\DeclareLanguageMapping{british}{british-apa}
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