APA (7th ed.) Citation

Held. (1999). Voice & data internetworking. Osborne Media Group.

Chicago Style (17th ed.) Citation

Held. Voice & Data Internetworking. London: Osborne Media Group, 1999.

MLA (8th ed.) Citation

Held. Voice & Data Internetworking. Osborne Media Group, 1999.

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