%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{various2013} various. (2013). \textit{Erfolgsbericht 2012}  (R. Gysin, N. Aebischer, S. Tschopp, \& P. Lack, Eds.). Burgdorf: Suchtfachklinik Selhofen.

\end{thebibliography}

\end{document}

