APA Style (7th ed.)
According to the American Psychological Association (2020), "do not use double quotation marks . . . to highlight a key term or phrase (e.g., around a term for which you are going to provide a definition; instead, use italics" (p. 158). Use italics once to introduce a word or phrase "when it is most appropriate to draw readers' attention to the term or phrase. . .. For example, if a word is used in a heading and then defined in the text that follows, italicize the term as part of the definition rather than in the heading" (American Psychological Association, 2020, p. 170). See Italics and Quotation Marks by the APA for more information.
Reference
American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000
