When you use someone else's words or ideas in your papers, you should create In-text citations (within the paper) and References list citations (at the end of the paper). Each In-text citation should lead to a References list citation, and each References list citation should come from an In-text citation.
Use the Publication manual of the American Psychological Association (6th edition) to cite your sources.
Use the Purdue OWL APA Guide (6th ed.) to put together your APA citations: