Personal communications such as interviews, emails, private letters and such are cited in the text of your paper, but not in your reference list. Your reference list should only contain retrievable data. If your reader will not be able to recover the source, do not included it in your reference list.
Personal communication - interview, letter, etc.
(K.D. Voyles, personal communication, October 13, 2017)
Lecture notes not posted in D2L
(T. Pac, personal communication, October 17, 2017)
Lecture slides posted in D2L
Vaughan, T. (2019).
HUM 3013 Week 11: The Aegean I [PowerPoint slides]. D2L. https://learn.uco.edu/d2l/home
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Visit the UCO Land Acknowledgement website to learn more.