APA (7th ed.) Citation

Held, G. (1996). Understanding data communications (5th ed.). Sams.

Chicago Style (17th ed.) Citation

Held, Gilbert. Understanding Data Communications. 5th ed. Indianapolis, Ind.: Sams, 1996.

MLA (9th ed.) Citation

Held, Gilbert. Understanding Data Communications. 5th ed. Sams, 1996.

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