Q. How would I cite a personal interview in APA style?

According to APA style, an interview you conducted is considered "personal communication," much like an email.  In the body of your paper, you may use a parenthetical citation such as (B. Billiken, personal communication, November 15, 2010).  The interview will not appear on the References page.

See the Purdue Online Writing Lab's APA Style Guide for more detailed instructions or consult the APA Publication Manual.