From the Purdue University Owl & APA Style websites on citing a personal communications in APA format:
Personal interviews, emails, phone conversations, text messages, live speeches, and social media messages are all examples of personal communication. No personal communication is included in your reference list; instead, parenthetically cite the communicator's name, the phrase "personal communication," and the date of the communication in your main text only.
Here are two examples of how to create in-text citations for personal communications.
(E. Robbins, personal communication, January 4, 2021).
A. P. Smith (personal communication, November 3, 2020) also claimed that many of her students had difficulties with APA style.
You can find additional guidance on citing in APA Style, 7th edition, from the Center for Academic Success Writing and Citing LibGuide - APA citations.
