Use Google Scholar for a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites.
Effective Citing & Referencing
This page gives the basics about setting up a Works Cited Page (and specific types of texts are easily accessed on the left side):
This page shows how to do in-text citations (in the body of the essay):