%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Patino_etal2017} {\textquotedblleft}\textit{Electrochemical reduction of nalidixic acid at glassy carbon electrodemodified with multi-walled carbon nanotubes}{\textquotedblright}. Pati{\~n}o Y, Pilehvar S, D{\'\i}az E, Ord{\'o}{\~n}ez S, De Wael K, Journal of hazardous materials \textbf{323}, 621 (2017).   http://doi.org/10.1016/J.JHAZMAT.2016.10.023

\end{thebibliography}

\end{document}

