\documentclass[twoside,12pt,a4paper]{article}
\usepackage{amssymb}

% The following changes are to center the output on an
% 8.5x11 sheet of paper

\setlength{\hoffset}{-0.95in}
\setlength{\voffset}{-.9in}
\setlength{\oddsidemargin}{34mm}
\setlength{\evensidemargin}{34mm}
\setlength{\topmargin}{24mm}

% Here are the formatting declarations as required by CUP

\usepackage{fancyheadings}
\setlength{\headrulewidth}{0pt}
\lhead[\textnormal\thepage]{}
\rhead[]{\textnormal\thepage}
\chead[\textit{The Author}]%
{\textit{The Title}}
\lfoot{}\cfoot{}\rfoot{}
\addtolength{\headheight}{2.5pt}


\setlength{\textheight}{215mm}
\setlength{\textwidth}{138mm}
\setlength{\parskip}{0pt}
\setlength{\parindent}{16pt}
\pagestyle{fancy}