%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Ruggerio+Gilman1961} Ruggerio, M. J., \& Gilman, S. (1961). Rodrigo de Reinosa and {\textquotedblleft}La Celestina{\textquotedblright}. \textit{Romanische Forschungen}, 73, 255--284.

\end{thebibliography}

\end{document}

