Example:
An email (J. W. Ayers, personal communication, July 2, 2018) confirming that results are accurate...
An email (J. W. Ayers, personal communication, July 2, 2018) confirming that results are accurate ...
During an interview conducted on October 11, 2017, Professor Peter Dawkins stated that ....
or
The Vice Chancellor's statement was confirmed during an interview (P. Dawkins, personal communication, October 11, 2017).
In a letter dated April 1, 2018, Ben Cork stated that ...
or
Ben Cork expressed sincere regret in his letter (personal communication, April 1, 2018) ...
During a phone interview conducted on August 14, 2018, Professor Sally Richards stated that ...
or
The Vice Chancellor's statement was confirmed during a phone interview (S. Richards, personal communication, August 14, 2018).