Forouzan, Behrouz A. Data communications and networking / Behrouz A. Forouzan with Sophia Chung Fegan. - 3rd ed. - Boston : McGraw-Hill, 2004. - xxxiv, 973 p. : ill ; 24 cm. Includes index. ISBN: 0071232419 Subjects--Topical Terms: Data transmission systems.Computer networks. Dewey Class. No.: 004.6