COUCH II, L. W. (1997). Digital and analog communication systems.-- ed.5. Prentica Hall.
Lua i Stíl Chicago (17ú heag.)COUCH II, Leon W. Digital and Analog Communication Systems.-- Ed.5. London: Prentica Hall, 1997.
Lua MLA (9ú heag.)COUCH II, Leon W. Digital and Analog Communication Systems.-- Ed.5. Prentica Hall, 1997.
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