Cita APA (7th ed.)
Greenblatt, D. (2003). The call heard 'round the world: Voice over Internet Protocol and the quest for convergence. AMACOM, American Management Association.
Cita Chicago (17th ed.)
Greenblatt, David. The Call Heard 'Round the World: Voice over Internet Protocol and the Quest for Convergence. New York: AMACOM, American Management Association, 2003.
Cita MLA (9th ed.)
Greenblatt, David. The Call Heard 'Round the World: Voice over Internet Protocol and the Quest for Convergence. AMACOM, American Management Association, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.