%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{15}

\bibitem{2608} Enric Marti, J.Roncaries, Debora Gil, Aura Hernandez-Sabate, Antoni Gurgui, \& Ferran Poveda. (2015). PBL On Line: A proposal for the organization, part-time monitoring and assessment of PBL group activities. \textit{JOTSE - Journal of Technology and Science Education}, 87--96.

\end{thebibliography}

\end{document}

