Example 1 – Published or Broadcast Interview
WC: Breslin, Jimmy. Interview by Neal Conan. Talk of the Nation, Natl. Public Radio, WBUR, Boston, 26 Mar. 2002.
Example 2 – Unpublished Interview
WC: Picard, Jean-Luc. Personal interview. 18 Oct. 2352.
Example 3 – Email
WC: Burns, Charles Montgomery. "Re: Uranium enrichment program." Received by Homer J. Simpson, 5 Apr. 2014.
NOTE: For sources with no page numbers, such as interviews and emails, it is preferable to include the author's name in the text and omit a parenthetical reference altogether.