Frenzel, L. E. (1995). Communication electronics (2nd ed.). Glencoe.
Lua i Stíl Chicago (17ú heag.)Frenzel, Louis E. Communication Electronics. 2nd ed. New York, N.Y: Glencoe, 1995.
Lua MLA (9ú heag.)Frenzel, Louis E. Communication Electronics. 2nd ed. Glencoe, 1995.
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