Instructions are included at this site for the major humanities and social science citation styles APA and MLA.
"Whenever you quote, summarize, paraphrase or refer to the work of another person you need to cite it. Citing is the way to give credit to other's work when you use it in your papers, speeches and projects. Citing other's work is a very important step in the academic writing process and the best way to avoid plagiarism.
Tip: You do not have to cite anything that is considered common knowledge such as dates of events, well known facts, etc."
What needs to be cited?
Any time you use someone else's words you need to cite either as direct quotes or summaries.. This includes: