Cita APA (7th ed.)

Bellamy, J. C. (1982). Digital telephony. John Wiley.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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