%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Ideli+Oggier2004} Ideli, M., \& Oggier, J. (2004). Die Gratwanderung der interkulturellen Mediation. \textit{SuchtMagazin}, \textit{30}(2; 04/2004), 20--22.

\end{thebibliography}

\end{document}

