Couch, L. W. (2001). Digital and analog communication systems (6th ed.). Prentice Hall, Pearson Education.
Lua i Stíl Chicago (17ú heag.)Couch, Leon W. Digital and Analog Communication Systems. 6th ed. Upper Saddle River, N.J. : Delhi,IN.: Prentice Hall, Pearson Education, 2001.
Lua MLA (8ú heag.)Couch, Leon W. Digital and Analog Communication Systems. 6th ed. Prentice Hall, Pearson Education, 2001.
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