\documentclass[12pt, a4paper, twoside]{report}
\usepackage{geometry}
\usepackage[T1]{fontenc}
\usepackage{mathptmx}
\usepackage{setspace}
\usepackage{graphicx}
\usepackage{titlesec}
\usepackage[round]{natbib}
\usepackage[hidelinks]{hyperref}
\geometry{inner=1.5in, outer=1in, top=1.5in, bottom=1in} % sets margins
\onehalfspacing % sets spacing between words
\titleformat{\chapter}[display]{\centering\large}{Chapter \thechapter}{18pt}{\bfseries\MakeUppercase} % formats chapter headings
\titlespacing{\chapter}{0pt}{-18pt}{40pt} % positions chapter headings
\newcommand{\reporttitle}{<Report Title>}
\title{\reporttitle}
\begin{document}
\include{titlepage}
\tableofcontents
\chapter{Acknowledgement}
\input{chapters/acknowledgements}
\chapter{Introduction}
\input{chapters/introduction}
\chapter{Objectives}
\input{chapters/objectives}
\chapter{Work done during the training period}
\input{chapters/work_done}
\chapter{Inferences}
\input{chapters/inferences}
\bibliographystyle{plainnat}
\bibliography{references}
\end{document}
