APA (7th ed.) Citation

Donohue. Cisco Voice Gateways and Gatekeepers (642-452/642-453 ) (1.). Pearson India.

Chicago Style (17th ed.) Citation

Donohue. Cisco Voice Gateways and Gatekeepers (642-452/642-453 ). 1. Pearson India.

MLA (8th ed.) Citation

Donohue. Cisco Voice Gateways and Gatekeepers (642-452/642-453 ). 1. Pearson India.

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