%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Torfs_etal1997} {\textquotedblleft}\textit{The cathedral of Bari, Italy: evaluation of environmental effects on stone decay phenomena}{\textquotedblright}. Torfs K, Van Grieken R, Zezza F, Garcia N, Macri F, Studies in conservation = {\'E}tudes de conservation \textbf{42}, 193 (1997).   http://doi.org/10.2307/1506750

\end{thebibliography}

\end{document}

