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Ask your professor which style they would like you to use. Otherwise, use whichever you are most familiar.
MLA Style Citations
Subjects in the humanities, like English and art, use MLA style for citations. Your instructor will tell you which citation style to use. If you are unsure, ask your instructor what the requirement is.
Learn all about APA from the American Psychological Association.
Chicago Manual of Style or Turabian
Subjects in history use Chicago for citations. These can be parenthetical or footnotes. Your instructor will tell you which citation style to use. If you are unsure, ask your instructor what the requirement is.