Do not cite personal communications or interviews you conducted in your reference list. Instead, cite the information in the paper as an in-text citation only.
Examples:
(Julie Cantor, pers. comm.).
(Jonathan Lee, Facebook direct message to author, May 5, 2017).
(Brenda Hasbrouck, text message to author, May 5, 2017).
(A. P. Moller, unpublished data; C. R. Brown and M. B. Brown, unpublished data).