APA-referens (7:e uppl.)

Bhatnagar, P. (2008). Written communication. Rajat Publications.

Chicago-referens (17:e uppl.)

Bhatnagar, Piyush. Written Communication. New Delhi: Rajat Publications, 2008.

MLA-referens (9:e uppl.)

Bhatnagar, Piyush. Written Communication. Rajat Publications, 2008.