Greetings!
I'm not sure I understand the distinction you are making. You say you know how to cite interviews in MLA; how is this different from that? Let me give you an example of how to cite an interview, and you can tell me if your situation is different for some reason:
Ms. Employer had this to say about the matter: "Mr. Smith is always the first to arrive and the last to go home." (Employer, Rita. Personal interview. 12 March 2008.)
I hope this helps!
Thanks,
Sarah, EssayForum.com
Sarah, EssayForum.com