In the following document, I use biblatex with backref. However, backref is output slightly differently between different types of entries. For articles, the page numbers are not followed by a period, but directly by the backref, making "cit. on" lowercase. For incollection, the reference is followed by a period, so "Cit. on" is capitalized. I would like "Cit. on" to be capitalized for articles as well which is why I want a period after the articles' reference and before the backref. Here is a MME:
\documentclass[11pt]{scrartcl}
\usepackage[backend=biber,style=apa,backref=true]{biblatex}
\begin{filecontents}{testbib.bib}
@article{art:21,
author = {A. Author},
journal = {Journal},
volume = {1},
number = {2},
pages = {3--4},
title = {Title},
year = {2021},
}
@incollection{inc:21,
author = {B. Bauthor},
booktitle = {Booktitle},
editor = {E. Editor},
pages = {3--4},
publisher = {Publisher},
title = {Title},
year = {2021},
}
\end{filecontents}
\addbibresource{testbib.bib}
\begin{document}
\textcite{art:21}\textcite{inc:21}
\printbibliography
\end{document}



authoryearmight be a reasonable choice, as shown in my modified answer? – citsahcots Jul 23 '21 at 14:41