Gaya APA

[et.al.], B, C. (2002). Communication systems : an introduction to signals and noise in electrical communication (4th ed.). New York: The McGraw-Hill Companies, Inc..

Gaya MLA

[et.al.], Bruce, Carlson. "Communication systems : an introduction to signals and noise in electrical communication". 4th ed. New York: The McGraw-Hill Companies, Inc., 2002. e-book.