%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{5}

\bibitem{Esfahani+Datta2015} Esfahani, H. K., \& Datta, B. (2015). Simulation of reactive geochemical transportprocesses in contaminated aquifers using surrogate models. \textit{Int. J. of GEOMATE}, \textit{8}(1), 1190--1196.

\end{thebibliography}

\end{document}

