APA (7th ed.) Citation

Held, G. (1999). Understanding data communications (1. Indian ed., 6. ed. Indianapolis, New Riders.). Techmedia.

Chicago Style (17th ed.) Citation

Held, Gilbert. Understanding Data Communications. 1. Indian ed., 6. ed. Indianapolis, New Riders. New Delhi: Techmedia, 1999.

MLA (9th ed.) Citation

Held, Gilbert. Understanding Data Communications. 1. Indian ed., 6. ed. Indianapolis, New Riders. Techmedia, 1999.