%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Pfister1998} Pfister, P. (1998, 22.07.1998). Doping : was Hobby-Sportler wissen m{\"u}ssen. \textit{Blick}.

\end{thebibliography}

\end{document}

