APA (7th ed.) Citation

Daly, E. A., & Hansell, K. J. (1999). Visual telephony. Artech House.

Chicago Style (17th ed.) Citation

Daly, Edward A., and Kathleen Jane Hansell. Visual Telephony. Boston [etc.]: Artech House, 1999.

MLA (9th ed.) Citation

Daly, Edward A., and Kathleen Jane Hansell. Visual Telephony. Artech House, 1999.