Carlson, A. B., & Paul, . B. C. J. (2002). Communication system: An introduction to signals and noise in electrical communication (4th ed.). Mc graw hill co..

Carlson, A. Bruce, and B. Crilly Janet Paul. Communication System: An Introduction to Signals and Noise in Electrical Communication. 4th ed. Singapore: Mc graw hill co., 2002.

Carlson, A. Bruce, and B. Crilly Janet Paul. Communication System: An Introduction to Signals and Noise in Electrical Communication. 4th ed. Mc graw hill co., 2002.