Cita APA (7a ed.)

Ghirardi, A. A., & Freed, B. M. (1932). Radio servicing course (1a ed.). Radio Technical Publishing.

Cita Chicago Style (17a ed.)

Ghirardi, Alfred A., y Bertram M. Freed. Radio Servicing Course. 1a ed. New York: Radio Technical Publishing, 1932.

Cita MLA (9a ed.)

Ghirardi, Alfred A., y Bertram M. Freed. Radio Servicing Course. 1a ed. Radio Technical Publishing, 1932.