Cita APA (7a ed.)

Bellamy, J. C. (1982). Digital Telephony. Wiley.

Cita Chicago Style (17a ed.)

Bellamy, John C. Digital Telephony. New York: Wiley, 1982.

Cita MLA (8a ed.)

Bellamy, John C. Digital Telephony. Wiley, 1982.