\documentclass{article}
\begin{document}
\title{Nobel Winning Paper}
\author{Joe Science}
\date{October 20, 2006}
\maketitle
\begin{abstract}
I report blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah
\end{abstract}
\section{Introduction}
blah blah blah blah blah \cite{some paper} blah \cite{a book,another paper} blah blah blah blah blah
\section{Middle}
blah blah blah blah \cite{a book} blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah
\section{End}
blah blah blah blah \cite{another paper} blah blah blah blah blah blah blah blah blah blah
\begin{thebibliography}{3}
\bibitem{some paper}"some paper"
\bibitem{a book}"a book"
\bibitem{another paper}"another paper"
\end{thebibliography}
\end{document}