Ich habe z. B. folgenden bib-Eintrag
@book{Shakespeare08,
Address = {Oxford: Routledge London},
Author = {Shakespeare, William},
Date-Added = {2017-02-02 20:12:10 +0000},
Date-Modified = {2017-02-02 20:15:44 +0000},
Editor = {Taylor, Gary},
Publisher = {Oxford World's Classics},
Title = {{Henry V}},
Year = {[1599] 2008}}
WARN - year field '[1599] 2008' in entry 'Shakespeare08' is not an integer - this will probably not sort properly.
Ich nehme an, dass das an der eckigen Klammer liegt. Bis ich zum MLA gewechselt hatte, hatte ich diese Meldung nicht bekommen.
\begin{filecontents}{\jobname.bib}
@book{Shakespeare08,
Address = {Oxford: Routledge London},
Author = {Shakespeare, William},
Date-Added = {2017-02-02 20:12:10 +0000},
Date-Modified = {2017-02-02 20:15:44 +0000},
Editor = {Taylor, Gary},
Publisher = {Oxford World's Classics},
Title = {{Henry V}},
Year = {[1599] 2008}}
\end{filecontents}
\documentclass[a4paper,oneside,BCOR=3mm,12pt,titlepage]{scrreprt}
\usepackage[ngerman,english]{babel}
\usepackage[autostyle,german=guillemets]{csquotes}
\usepackage[utf8]{inputenc}
\usepackage[sfdefault]{ClearSans}
\usepackage[style=mla]{biblatex}
\addbibresource{\jobname.bib}
\usepackage{hyperref}
\begin{document}
\citetitle{Shakespeare08}
\end{document}