%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Terzano_etal2006} {\textquotedblleft}\textit{Spectroscopic investigation on the chemical forms of Cu during the synthesis of zeolite X at low temperature}{\textquotedblright}. Terzano R, Spagnuolo M, Medici L, Tateo F, Vekemans B, Janssens K, Ruggiero P, Applied geochemistry \textbf{21}, 993 (2006).   http://doi.org/10.1016/J.APGEOCHEM.2006.03.004

\end{thebibliography}

\end{document}

