FitzGerald, J., & Dennis, A. (1996). Business data communications and networking (5th ed.). Wiley.

FitzGerald, Jerry, and Alan Dennis. Business Data Communications and Networking. 5th ed. New York: Wiley, 1996.

FitzGerald, Jerry, and Alan Dennis. Business Data Communications and Networking. 5th ed. Wiley, 1996.