KENNEDY, G. (1986). Electronic communication system.--Ed.3. McGraw Hill Book Co.
Lua i Stíl Chicago (17ú heag.)KENNEDY, George. Electronic Communication System.--Ed.3. New York: McGraw Hill Book Co, 1986.
Lua MLA (9ú heag.)KENNEDY, George. Electronic Communication System.--Ed.3. McGraw Hill Book Co, 1986.
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