Roger L. Freeman. (1996). Telecommunication system engineering. New York: John Wiley and Sons.
Trích dẫn kiểu ChicagoRoger L. Freeman. Telecommunication System Engineering. New York: John Wiley and Sons, 1996.
Deismireacht MLARoger L. Freeman. Telecommunication System Engineering. New York: John Wiley and Sons, 1996.
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