APA (7th ed.) Citation

Yarberry, W. A. (2003). Computer telephony integration (2nd ed.). Auerbach Publications.

Chicago Style (17th ed.) Citation

Yarberry, William A. Computer Telephony Integration. 2nd ed. Boca Raton, Fla: Auerbach Publications, 2003.

MLA (8th ed.) Citation

Yarberry, William A. Computer Telephony Integration. 2nd ed. Auerbach Publications, 2003.