APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.