\begin{filecontents}{\jobname.bib}
@article{rao:2014,
    title={Causes of Sudden Cardiac Death on Autopsy Findings; a Four-Year Report},
    author={Rao, Dinesh, and Sood, Divya, and Pathak, P, and Dongre, Sudhir D},
    journal={Journal  of Emergency-An Academic Emergency Medicine},
    volume={2},
    number={1},
    pages={12-17},
    year={2014}
}
\end{filecontents}

\documentclass{book}

% If using APA bibliography style

%\usepackage[natbibapa]{apacite}
%\bibliographystyle{plainnat}
\usepackage{natbib}
\bibliographystyle{apalike}

\begin{document}
\citet{rao:2014}
\bibliography{\jobname.bib}
\end{document}