APA (7th ed.) Citation

Greenblatt, D. (2003). The call heard 'round the world : voice over internet protocol and the quest for convergence / David Greenblatt: Voice over internet protocol and the quest for convergence. AMACOM.

Chicago Style (17th ed.) Citation

Greenblatt, David. The Call Heard 'Round the World : Voice over Internet Protocol and the Quest for Convergence / David Greenblatt: Voice over Internet Protocol and the Quest for Convergence. New York: AMACOM, 2003.

MLA (9th ed.) Citation

Greenblatt, David. The Call Heard 'Round the World : Voice over Internet Protocol and the Quest for Convergence / David Greenblatt: Voice over Internet Protocol and the Quest for Convergence. AMACOM, 2003.

Warning: These citations may not always be 100% accurate.