• Personal communications include conversations, letters, interviews, e-mails, telephone conversations and other unpublished communications.
• Personal communications require both an in text citation and a reference list entry.
• Examples:
"In a personal interview with Bill Gates on June 28, 2006 [1], he suggested that he would soon rule the world."
"In a letter to the author dated September 28, 2018, Professor Mueller [2] detailed his experiences with using this data collection software."