%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Schaller1971} Schaller, G. B. (1971). Imperiled phantom of Asian peaks. \textit{National Geographic}, \textit{140}, 702--707.

\end{thebibliography}

\end{document}

