APA (7th ed.) Citation

Bellamy, J. (2001). Digital telephony (2nd ed.). John Wiley & Sons, INC..

Chicago Style (17th ed.) Citation

Bellamy, John. Digital Telephony. 2nd ed. New York: John Wiley & Sons, INC., 2001.

MLA (9th ed.) Citation

Bellamy, John. Digital Telephony. 2nd ed. John Wiley & Sons, INC., 2001.