When you provide a reference within the text of a research paper, you must also provide a corresponding citation on your "References" page. For example, in the illustration below of a hypothetical research paper, the highlighted sentence includes an in-text citation, and the Reference page contains a corresponding entry. For quotations, see the tab titled Quotations.
Exception: Personal communications (e-mails, instant messages, or personal interviews) should not be included on the "References" page in APA style.
SPECIAL NOTE: The in-text citation for an electronic source may not include page numbers. In such a case, you should provide the section heading, if any, and the paragraph number (yes, you must count them). Example: ("LCCC Police Academy," 2010, Physical Standards section, para. 1).
When you are referencing the AUTHOR(s) by name in your text, include author name(s) depending on number as listed below, with the date in parentheses after the name(s):
When you are not naming the AUTHOR in your text:
For additional help with in-text citations, refer to the Publication Manual of the American Psychological Association, Chapter 6, "Crediting Sources."