%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{MartinezMarin1978} Martinez Marin, J. (1978). \textit{Sintaxis de la {\textquotedblleft}Celestina{\textquotedblright}}. Granada: Universidad de Granada.

\end{thebibliography}

\end{document}

