If I quote a piece with two authors, I would like to have in the text: "(Spagna und Peattie, 2012)" instead of "(Spagna and Peattie, 2012)". If there are more than two authors, everything is fine again, since "et al." is written. I use the apalike bibliography style.
\usepackage[german]{babel}
\usepackage[german=guillemets]{csquotes}
\usepackage[round]{natbib}
\clearpage\phantomsection
\addcontentsline{toc}{section}{Referenzen}
\thispagestyle{plain}
\bibliographystyle{apalike}
\bibliography{referenzen}
Here is an example of a piece with two authors; the citation call-out should use the conjunction "und":
@article{spagna2012terrestrial,
title={Terrestrial locomotion in arachnids},
author={Spagna, Joseph C and Peattie, Anne M},
journal={Journal of Insect Physiology},
volume={\textbf{58}},
pages={599--605},
year={2012},
publisher={Elsevier}
}

\bibliographystyle? – tanGIS Jul 02 '20 at 10:04babelwith the optiongermanrather than with the optionngerman? Does your document really adhere to the pre-1996 spelling rules? – Mico Jul 02 '20 at 10:34