To find out more about proper citation see this Citation Styles Research Guide made by your Olin Librarians!
In general all citations should include the author of the work used, title, publisher, place of publication (or URL), and date. However, there are quite a few different ways to cite resources in your paper. The citation style usually depends on the academic discipline involved.
For example:
Check with your professor to make sure you use the required style. Whatever style you use, be consistent!