To cite a personal interview that occurred on more than one day, begin by following the MLA format template. In general, treat the person being interviewed as the author. Then follow the guidelines on pages 28–29 of the MLA Handbook and include the description interview as the “Title of source” element. You may list the interviewer’s name as an “Other contributor” after the description. In the “Publication date” slot, treat the dates of the interview as a range if they are consecutive:
Cohen, Allan. Interview. Conducted by Christine Stevens, 24-25 May 2016.
If the dates are not consecutive, treat them as a series:
Doe, Jane. Interview. Conducted by John Smith, 3 and 6 Aug. 2017.
Doe, John. Interview. Conducted by Jorge Menocal, 2, 3, and 7 Sept. 2016.
Published 26 September 2017