%&LaTeX
\documentclass{article}

\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Adam+Schwevers1997} Adam, B., \& Schwevers, U. (1997). \textit{Aspekte des Schwimmverhaltens rheophiler Fischarten} (Vol. 50).

\end{thebibliography}

\end{document}

