APA’s Publication Manual (2020) indicates that, in the body of your paper, you should use italics for the titles of: “books, reports, webpages, and other stand-lone works” (p. 170) periodicals (journals, magazines, newspapers)
To cite a definition within the text, you would place the defined word and the date of publication in parentheses after the relevant phrase and before the punctuation mark. If the definition is quoted, you must also add the page number.
To cite a dictionary definition in APA Style, start with the author of the dictionary (usually an organization), followed by the publication year, the word you’re citing, the dictionary name, the publisher (if not already listed as author), and the URL.
An APA reference list must:Be on a new page at the end of the document.Be centred.Be alphabetically by name of first author (or title if the author isn’t known, in this case a, an and the should be ignored) Contain full references for all in-text references used.