%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{DeGraffenried1998} De Graffenried, V. (1998). Pr{\'e}vention : Berne lutte contre la consommation d{\textquoteright}ecstasy, arm{\'e} d{\textquoteright}un {\'e}trange engin; 32 000 tablettes saisies. \textit{La Libert{\'e}}, (19.08.1998), 7.

\end{thebibliography}

\end{document}

