Couch, L. W. (2001). Digital and analog communication systems (Sixth edition.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Couch, Leon W. Digital and Analog Communication Systems. Sixth edition. Upper Saddle River: Prentice Hall, 2001.
Lua MLA (8ú heag.)Couch, Leon W. Digital and Analog Communication Systems. Sixth edition. Prentice Hall, 2001.
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