\documentclass[a4paper,10pt,twoside]{article}

% Note that if you want to use the \begin{equation} ... \end{equation} environment, you will have to
% include fleqn in the \documentclass[...]{...} options! The top of your LaTeX file should then look
% like this:
% \documentclass[a4paper,10pt,twoside,fleqn]{article}

\usepackage{clin}        % Stylefile for CLIN Proceedings
\usepackage{harvard}     % Bibliography Stylefile
%\usepackage{...,cgloss4e,avm,trees,tree-dvips,gb4e,ipa,graphicx}
                         % Whatever other packages you need

% Harvard:
% \cite{Covington}             (Covington 1994)
% \citeasnoun{Covington}       Covington (1994)
% \citeyear{Covington}         (1994)

\begin{document}
\title{Your title}
\subtitle{An optional subtitle}
\author{Author}
\date{Affiliation}       % !!!
\maketitle


\begin{abstract}
  Your abstract text.
\end{abstract}

\section{Section title}
\subsection{Subsection title}
Etcetera ---all the familiar LaTeX stuff. \cite{Chom70}

\citeasnoun{Chom86} claimed that... but \citeasnoun{Fuk07} found that... \cite{Fuk07} It has been
shown before that ... \cite{HinNak94}

\cite{Fuk08} and \cite{Fuk09}

\nocite{Sag} % items in your bibliography file that are not cited in your text

\bibliographystyle{clin}
\bibliography{samplebib}
\end{document}