APA (7th ed.) Zitazioa

Bellamy, J. C. (2003). Digital Telephony (3rd ed.). Wiley India.

Chicago Style (17th ed.) Zitazioa

Bellamy, John C. Digital Telephony. 3rd ed. New Dehli: Wiley India, 2003.

MLA (9th ed.) Zitazioa

Bellamy, John C. Digital Telephony. 3rd ed. Wiley India, 2003.