APA (7th ed.) Zitazioa
NIIT. (2004). Communication systems. Prentice-Hall of India.
Chicago Style (17th ed.) Zitazioa
NIIT. Communication Systems. New Delhi: Prentice-Hall of India, 2004.
MLA (9th ed.) Zitazioa
NIIT. Communication Systems. Prentice-Hall of India, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.