\documentclass[a4paper, pdftex, 12pt]{scrartcl} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage[english]{babel} \usepackage{natbib} \begin{document} \thispagestyle{empty} This text thrives on prominently-placed citations (e.\thinspace g. \cite{Frank1957}) of much more prominent literary works \cite[c.\thinspace f.][p. 7]{Orwell1957}, of which \cite{Hawking1988} is only one. \bibliographystyle{alpha} \bibliography{collection} \end{document}