ISO Date format with Biblatex/Biber? answers the same question for the ISO date format, but I can't find information on how to use the German format (dd.mm.yyyy). The documentation is of no help, as only year, short, long, terse, comp, ymd
and edtf
are covered and there is no information on how to change the separator from /
to .
. I am using american
in babel
and neither isodate
nor datetime
had an effect on the bibliography.
1 Answer
The date format depends on your language settings. This can be shown by the following example:
\documentclass[11pt]{article}
\usepackage[american,ngerman]{babel}
\usepackage[]{biblatex}
\addbibresource{biblatex-examples.bib}
\begin{document}
\selectlanguage{ngerman}
\section{ngerman}
\begin{refsection}
\cite{ctan}
\printbibliography
\end{refsection}
\selectlanguage{american}
\section{american}
\begin{refsection}
\cite{ctan}
\printbibliography
\end{refsection}
\end{document}
In your case you can use the default german definition of \mkbibdatelong
/\mkbibdateshort
to get your result:
\documentclass[11pt]{article}
\usepackage[american,ngerman]{babel}
\usepackage[]{biblatex}
\addbibresource{biblatex-examples.bib}
\DefineBibliographyExtras{american}{%
%from german.lbx
\protected\def\mkbibdatelong#1#2#3{%
\iffieldundef{#3}
{}
{\mkbibordinal{\thefield{#3}}%
\iffieldundef{#2}{}{\nobreakspace}}%
\iffieldundef{#2}
{}
{\mkbibmonth{\thefield{#2}}%
\iffieldundef{#1}{}{\space}}%
\iffieldbibstring{#1}
{\bibstring{\thefield{#1}}}
{\dateeraprintpre{#1}\stripzeros{\thefield{#1}}}}%
\protected\def\mkbibdateshort#1#2#3{%
\iffieldundef{#3}
{}
{\mkdayzeros{\thefield{#3}}\adddot
\iffieldundef{#2}{}{\thinspace}}%
\iffieldundef{#2}
{}
{\mkmonthzeros{\thefield{#2}}%
\iffieldundef{#1}
{}
{\iffieldundef{#3}{/}{\adddot\thinspace}}}%
\iffieldbibstring{#1}
{\bibstring{\thefield{#1}}}
{\dateeraprintpre{#1}\mkyearzeros{\thefield{#1}}}}%
}
\begin{document}
\selectlanguage{ngerman}
\section{ngerman}
\begin{refsection}
\cite{ctan}
\printbibliography
\end{refsection}
\selectlanguage{american}
\section{american}
\begin{refsection}
\cite{ctan}
\printbibliography
\end{refsection}
\end{document}
isodate
,datetime
anddatetime2
are meant for other purpose.biblatex
has control over the entries.datetime2
has any bearing on the date inbiblatex
's bibliography.