APA (7th ed.) Citation

Held, G. (1997). Understanding data communications: From fundamentals to networking (2nd ed.). John Wiley & Sons.

Chicago Style (17th ed.) Citation

Held, Gilbert. Understanding Data Communications: From Fundamentals to Networking. 2nd ed. Chichester: John Wiley & Sons, 1997.

MLA (9th ed.) Citation

Held, Gilbert. Understanding Data Communications: From Fundamentals to Networking. 2nd ed. John Wiley & Sons, 1997.

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