ITT. (1972). Reference Data for Radio Engineers (5th ed.). International Telephone and Telegraph Corporation.
Cita Chicago Style (17a ed.)ITT. Reference Data for Radio Engineers. 5th ed. Indianapolis: International Telephone and Telegraph Corporation, 1972.
Cita MLA (8a ed.)ITT. Reference Data for Radio Engineers. 5th ed. International Telephone and Telegraph Corporation, 1972.
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