Emails, nonarchived discussion groups, letters, memos, telephone conversations, and personal interviews are considered personal communications in APA. This type of communication can be difficult to provide recoverable data; therefore, these types of communication are not included in the Reference list. Cite personal communications within the body of your paper only.

Example:
(J. A. Smith, personal communication, January 3, 2007)

J. A. Smith (personal communication, January 3, 2007)

Author:
Provide the first and middle initials as well as the last name of the author, followed by a comma -J. A. Smith,

Personal Communciation:
The type of communication to alert the reader followed by a comma - personal communication,

Date:
The date the communication took place (or as close as possible) - January 3, 2007

Note: For more information about personal communciations, see page 214 in the 5th edition of the APA manual.