%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{5}

\bibitem{Hocker_etal1968} Hocker, L. O., Sokoloff, D. R., Daneu, V., Szoke, A., \& Javan, A. (1968). Frequency mixing in the infrared and far-infrared using a metal-to-metal point contact diode. \textit{Appl Phys Lett}, \textit{12}(12).

\end{thebibliography}

\end{document}

