How do I reduce the size of the word “References” in the bibliography section?

I'm using \begin{thebibiliography} to generate a bibliography at the end of the page. The heading for this is "References" and I would like to reduce the size of this heading. I'm using the article document class.

• Maybe the titlesec package could do the job. – Enrico Maria De Angelis May 1 '16 at 20:17
• Welcome to TeX.SX! Knowing the document class you're using is necessary. – egreg May 1 '16 at 20:20
• Could you please help me with titlesec and how I could go about doing this? – thorium May 1 '16 at 20:24
• Try the light version, if you only want to change the size of the references title: \titleformat*{\section}{\large} (the default in the article class is \Large). – Bernard May 1 '16 at 20:28
• Add \bfseries to @Bernard's comment: \titleformat*{\section}{\large\bfseries}. If you are new to LaTeX, you may find these answers (and, for languages other than English, these answers) helpful. – jon May 2 '16 at 0:56

The simplest way to go is the light usage of titlesec. As in the article class, the bibliography is a \section, which by default is in \Large size, you can add this to your preamble:
\usepackage{titlesec}