APA (American Psychological Association) 7th edition is used in the areas of the behavioral and social sciences.
There are formatting rules one follows when writing a research paper (margins, page numbers, titles, capitalization, etc.), creating in-text citations in the body of the paper, and writing full citations in the References page (the last page). View the APA
sample paper. Some professors may ask you to submit your papers to TurnItin,
a plagiarism checking database.
You must have both the in-text citations and the References page which is a list of all sources you used for your paper.
Check out the Gallaudet English Center: Words that introduce quotes or paraphrases, Guide to paraphrasing, How to avoid plagiarism, and other writing resources.