%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{5}

\bibitem{Lu2011} Lu, C., Chang, M., Kinshuk, Huang, E., \& Chen, C.-W. (2011). Architecture and Collaborations among Agents in Mobile Educational. In \textit{Proceedings of the 7th IEEE International Workshop on PervasivE Learning, Life, and Leisure} (171{\^a}175).

\end{thebibliography}

\end{document}

