%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{568} Xavier Otazu, \& Maria Vanrell. (2005). \textit{A surround-induction function to unify assimilation and contrast in a computational model of color apearance}.

\end{thebibliography}

\end{document}

