Or, if you want a bibliography, students can cite their sources using the Easy Bib Add-on?Easy Bib is an amazing tool to help you write bibliographies. The free Add-on integrates into your Google Docs. Once you install the Easy Bib Add-on, you can use it in each of your documents to help you create a perfectly formatted bibliography in hundred's of citation styles. It even indents the second line!
Here's a video on how to use the Easy Bib Add-on as well as how to use the Google Research Tool to find sources, insert them into your document, and cite the sources as footnotes.