%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{2720} Fadi Dornaika, Bogdan Raducanu, \& Alireza Bosaghzadeh. (2015). Facial expression recognition based on multi observations with application to social robotics. In Bruce Flores (Ed.), \textit{Emotional and Facial Expressions: Recognition, Developmental Differences and Social Importance} (pp. 153--166). Nova Science publishers.

\end{thebibliography}

\end{document}

