# How can I create a bibliography like a section?

I have the following:

\documentclass{article}
\usepackage{multicol}

\begin{document}
\begin{multicols}{2}

\section{}
\begin{thebibliography}{99}

\subsection{Differentiation}

\bibitem{DifIntWiki}
\emph{URL}

\end{thebibliography}
\end{multicols}
\end{document}

It creates a section with a number, and the Bibliography follows on the next line. I'm interested in combining these two lines together, essentially turning the bibliography into a section. Is there any way to do this?

Additionally, I'm using the multicol package, so I'm wondering if there is a way to do this without affecting the columns.