Conversation, e-mail, lecture notes etc.

Personal notes, e-mails, conversations, lecture notes etc. that is not available to others, should be referred to as communication. 

Name the person cited and if necessary working place. Give information as to why you are citing this person, that this is an e-mail, and the date of the e-mail. Make sure you ask the person in question if you may cite him/her and if you are citing them correctly.