According to APA style guidelines, an interview is non-recoverable data, so you do not need to cite your interviewee in a reference list. Whether paraphrasing or quoting a source that you have interviewed, cite the interview in the main text after the quoted or paraphrased statement. Use the source’s first initial, followed by a period, then the last name, the words “personal communication,” concluding with the month, day and year. For example: (B. Crowe, personal communication, January 1, 2014). You can also use it contextually: B. Crowe stated that APA style can be quite tricky. (personal communication, January 1, 2014). In this case, you are using the name of the interviewee in the sentence; therefore, you do not need to repeat it afterward in parentheses, but just need the words “personal communication" with the date.