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APA (American Psychological Association) is a style of writing and formatting that is most commonly used in the Social Sciences (Psychology, Sociology, Linguistics, Economics, Criminology), Business, and Nursing.
It is important that you refer to your sources consistently in APA style throughout your paper so that your reader can easily follow those citations back to your reference page to explore those sources for themselves. This involves:
Margins - 1 inch all sides, including top, bottom, left and right (p. 229)
Font preference and size - The preferred font is 12-pt Times New Roman. (p. 228)
Line Spacing - Double spacing should occur throughout the document, including quotations of 40 or more words. (pp. 171 & 229)
Page Numbers - Page numbers should be located in upper right corner, unless specified differently from your instructor. Be sure to include a page number on the title page, too! (p. 230)
Paragraph Indentation - Paragraphs should be indented 5-7spaces or 1/2 inch. (p. 229)