%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Buehr2012} B{\"u}hr, V. (2012, 13.10.2012). Partydrogen k{\"o}nnen das Herz irreparabel sch{\"a}digen. \textit{Tages-Anzeiger}, 42.

\end{thebibliography}

\end{document}

