\documentclass{article}
\usepackage[backend=biber,style=authoryear]{biblatex}

\addbibresource{biblatex-examples.bib}
\addbibresource{../common/local1.bib}
\addbibresource{../common/local2.bib}

\begin{document}

% Examples of Biblatex citation commands
\cite{aristotle:physics} \\
\cite[5--10]{aristotle:physics} \\
\cite[see][5--10]{aristotle:physics} \\
\parencite{aristotle:physics} \\
\parencite[5--10]{aristotle:physics} \\
\parencite[see][5--10]{aristotle:physics} \\
\textcite{aristotle:physics} \\
\textcite[5--10]{aristotle:physics} \\
\textcite[see][5--10]{aristotle:physics} \\

\end{document}
