Cita APA (7a ed.)

Walters, R. (1999). Computer telephony integration (2nd ed.). Artech House.

Cita Chicago Style (17a ed.)

Walters, Rob. Computer Telephony Integration. 2nd ed. Boston [etc.]: Artech House, 1999.

Cita MLA (9a ed.)

Walters, Rob. Computer Telephony Integration. 2nd ed. Artech House, 1999.