APA (7th ed.) Citation

Shay, W. A. (1999). Understanding data communications and networks (2nd ed.). PWS.

Chicago Style (17th ed.) Citation

Shay, William A. Understanding Data Communications and Networks. 2nd ed. Pacific Grove, Calif: PWS, 1999.

MLA (8th ed.) Citation

Shay, William A. Understanding Data Communications and Networks. 2nd ed. PWS, 1999.

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