%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Khan_etal2013} {\textquotedblleft}\textit{Comparative study of electron temperature and excitation temperature in a magnetic pole enhanced-inductively coupled argon plasma}{\textquotedblright}. Khan AW, Jan F, Saeed A, Zaka-ul-Islam M, Abrar M, Khattak NAD, Zakaullah M, Current applied physics \textbf{13}, 1241 (2013).   http://doi.org/10.1016/j.cap.2013.03.016

\end{thebibliography}

\end{document}

