@LaTeX-class-file
filename = "harvard-thesis.cls",
version = "0.4",
date = "4 April 2012",
codetable = "ISO/ASCII"
As you can see in this example, my table exced the widht of the text document. My intention is to adjust the table widht to the text column in the whole doc.
\documentclass{harvard-thesis}
\captionsetup{labelfont=\rmdefault, textfont=\rmdefault }
\begin{document}
\begin{table}
\centering
\begin{tabular}{@{}lll@{}}\toprule[1.5pt]
\bf Periodista & \bf Medio & \bf Cargo \\\midrule
Sample name surname & Sample medium & Other text. Responsable de Participación, redes y Comunidad \\
Sample name surname & Sample medium & Other text. Responsable de Participación, redes y Comunidad \\
Sample name surname & Sample medium & Other text. Responsable de Participación, redes y Comunidad \\
Sample name surname & Sample medium & Other text. Responsable de Participación, redes y Comunidad \\
\bottomrule[1.25pt]
\end {tabular}\par
\captionof{table}{Periodistas participantes}
\label{tab:periodistas}
\end{table}
\end{document}

latex fit table to page site:tex.stackexchange.comand you will find many examples. There is even a page collecting all methods (by Werner?) which I can't find at the moment. – gernot Dec 02 '16 at 14:01