Citing an author if their work is referenced more than once in a single paragraph.

According to the 6th edition of the APA : "Within a paragraph, when the name of the author is part of the narrative...you need not include the year in subsequent nonparenthetical references to a study as long as the study cannot be confused with other studies cited in the article. Do include the year in all parenthetical citations" (pg. 174).

Owl of Purdue states: “In other words, every time you bring up the author in a new paragraph, you should use the year, but you don’t have to within a paragraph, as long as it’s clear from your wording that you are discussing the same author. If you were giving a direct quotation that needed a parenthetical reference for the page number, then you’d include the year as well.”

Remember, if you list the author in parenthesis, you must include the year.