%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Cole_etal1997} {\textquotedblleft}\textit{Collective cyclotron modes in high mobility two-dimensional hole systems in GaAs-(Ga,Al)As heterojunctions: 1: experiments at low magnetic fields and theory}{\textquotedblright}. Cole BE, Peeters FM, Ardavan A, Hill SO, Singleton J, Batty W, Chamberlain JM, Polisskii A, Henini M, Cheng T, Journal of physics : condensed matter \textbf{9}, 3163 (1997)

\end{thebibliography}

\end{document}

