Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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