|Sound or music recording|
|Image from a printed work|
|Image from an online source|
|Technical or Research Report|
|Online research report with Corporation/Government agency as author|
|Authored online research report|
|Article from Wikipedia||Title of article. (n.d.). In Wikipedia. Retrieved from article URL|
|Personal communications: private letters, email, personal interviews, telephone conversations, etc.||
These types of communications are referenced in text but not cited in the References section.
TK. Lucas (personal communication, April 18, 2011) remarked that students should prepare well for an exam.
It is important for the family to meet with the physician to discuss treatment options (V.G. Nguyen, personal communication, September 28, 1998).