Q:

Appendix after bibliography

I am using \includefile{} to add a preliminary literature review to a thesis proposal.  The specifications require that "Appendix" be printed in the upper right hand corner.  
I tried ending my proposal main like this: 
\printbibliography
\rhead{Appendix}
\include{literatureReview}
\end{document}

But it doesn't work.  The entire literatureReview file has the header "REFERENCES" in the upper left corner.  The proposal main uses a plain page style, and the literatureReview currently has no sections in it.  Does anyone know the proper way to do this? 

EDIT:
Here's a minimal compilable version:
\documentclass{test}
\usepackage[american]{babel}
\usepackage[style=apa]{biblatex}
\usepackage{csquotes}
\usepackage{pdfpages}
\usepackage{fancyhdr} 

\DeclareLanguageMapping{american}{american-apa}

\usepackage{hyperref}

\addbibresource{someBib}

    %which contains:
    %@Article{TakeuchiKoichi05,
%   author={Takeuchi Koichi and Inui Kentaro and Fujita Atsushi and Takeuchi Nao and Abe Shuya},
%   title={Construction of Compositional Lexical Database Based on {L}exical {C}onceptual {S}tructure},
%   journal={IPSJ SIG Notes},
%   publisher={Information Processing Society of {J}apan (IPSJ)},
%   year={2005},
%   month=sep,
%   volume={2005},
%   number={94},
%   pages={123-130},
%}

\title{A Title}
\author{Nathan Glenn}
\begin{document}
\begin{refsection}
\maketitle
%\begin{refsection}

Random citation: \parencite{TakeuchiKoichi05}.  

\printbibliography
\end{refsection}
\clearpage
\markboth{Appendix}{}
\begin{refsection}
\include{literatureReview}
\end{refsection}
\end{document}

And here's the class file I used:
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{test}[2011/5/20 BYU Honors Thesis proposal]

\LoadClass[12pt]{article}

\usepackage[margin=1in]{geometry}

\usepackage{setspace}
\doublespace
\pagestyle{myheadings}
\thispagestyle{plain}
\setlength{\parindent}{30pt}

\global\let\@course\@empty
\renewcommand{\maketitle}{
  \begin{flushright}
    \@author\\
    \ifx\@date\@empty
      \today
    \else
      \@date\\
    \fi
  \end{flushright}

  \begin{center}
    \Large{\@title}\\An Honors Thesis Proposal
    \vspace{6 pc}
  \end{center}
}

literatureReview.tex has no preamble, and does not change the page styles in any way.  

A:

You can use the \markboth command to obtain the desired mark, so you could use
\clearpage
\markboth{Appendix}{}
\include{literatureReview}

Since you are already loading the fancyhdr package, you can add the following lines to the file literatureReview.tex:
\pagestyle{fancy}
\fancyhead[L,C]{}
\fancyhead[R]{Appendix}

