%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Barnes_etal1991} {\textquotedblleft}\textit{Optically detected magnetophonon resonance in GaAs-GaAlAs heterojunctions}{\textquotedblright}. Barnes DJ, Nicholas RJ, Watts M, Peeters FM, Wu XG, Devreese JT, Langerak CJ, Singleton J, Harris JJ, Foxon CT,  (1991)

\end{thebibliography}

\end{document}

