Personal Communications wouldn't usually be included in essays. However, they may be used for a research project. It is suggested that you discuss the validity of these types of sources with your lecturer before including them in an assignment.
The following details should be provided for personal communications in a reference list:
- Author's initial followed by the surname,
- Title of the document
- The full date
The following examples were taken from the Style Manual for Authors Editors and Printers, 6th edn, p.213
S Savieri, interview with the author, 24 April 1999
V Ngu, facsilime, 12 January 2001.