M. E. Daniels (personal communication, March 2, 2014) explained in an email that…OR
The interviewee (M.E. Daniels, personal communication, March 2, 2014) explained during our interview that…
If you are citing a recording or archived copy of a personal communication (e.g., email message, interview, etc.), these forms are recoverable and should be referenced in your List of References as a online forum post, tape recording, video etc.
From: Citing References in Text, Section 6.20, Personal Communications, APA Publication Manual (6th ed) (2010)