You must cite:
Facts, figures, ideas, or other information that is not common knowledge including paraphrases, summaries, and direct quotations.Ideas, words, theories, or exact language that another person used in other publications or interviews.Publications that must be cited include books, book chapters, articles, web pages, films, resource found in library databases, etc.
When in doubt, be safe and cite your source!
From MIT Libraries
Citations have two components: in-text references and a Works Cited (MLA) or References (APA) page. This guide will help you create both types of citations for MLA & APA.
EBSCOhost: 
Gale & Opposing Viewpoints: or

Proquest:
Newsbank:
CQ Researcher: 
Credo Reference:
Films on Demand:
It's important to cite sources you used in your research for several reasons:
From MIT Libraries