It is possible to use LaTeX macros in titles, author names etc. in a .bib
file. In this case \textup{}
can be used to print the volume name upright instead of in italics.
MWE:
\documentclass{article}
\usepackage[style=sbl]{biblatex}
\addbibresource{sblrefs.bib}
\begin{document}
See bibliography below \nocite{Husek,Tkacz}
\printbibliography
\end{document}
sblrefs.bib
:
@article{Husek,
title = {Human Freedom according to the Earliest Latin Commentaries on Paul's Letters},
author = {Hušek, Vít},
journal = {\textup{StPatr}},
volume = {44},
pages = {385--390},
year = {2010}
}
@article{Tkacz,
title = {Esther as a Type of Christ and the Jewish Celebration of Purim},
author = {Brown Tkacz, Catherine},
journal = {StPatr},
volume = {44},
pages = {183--187},
year = {2010}
}
Note that only one of the entries has the \textup
macro, to show the difference in output.
Result:

Note also that this is slightly different from the format on the website regarding punctuation and author names, but that is a different issue.