Examples of personal communications are private letters, emails, personal interviews, lectures, telephone calls. They are essentially irretrievable.
Use exact dates, the person’s initials, followed by their last name. Personal communications appear in the text only and do not go in the reference list.
- T. K. Lutes (personal communication, April 18, 2001)
- (V.-G. Nguyen, personal communication, September 28, 1998)
(American Psychological Association, 2010, p. 179)