%&LaTeX
\documentclass{article}

\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Graf2009} Graf, S., \& Kinshuk. (2009). Advanced Adaptivity in Learning Management Systems by Considering Learning Styles. In \textit{International Workshop on Social and Personal Computing for Web-Supported Learning Communities (SPeL 2009)} (pp. 235--238). Milan, Italy: Proceedings of the IEEE/WIC/ACM International Joint Conferences on Web Intelligence and Intelligent Agent Technology,.

\end{thebibliography}

\end{document}

