theguyfromtex

\DeclareFieldFormat*{booktitle}{#1\addcomma\addspace}
\DeclareFieldFormat*{journaltitle}{#1\addcomma\addspace}
\DeclareFieldFormat*{issuetitle}{#1\addcomma\addspace}
\DeclareFieldFormat*{maintitle}{#1\addcomma\addspace}
\DeclareFieldFormat*{proceedingstitle}{#1\addcomma\addspace}
\DeclareFieldFormat*{collectiontitle}{#1\addcomma\addspace}