Duston, M. (1924). Radio theory simplified. Wis.
Cita Chicago (17th ed.)Duston, Merle. Radio Theory Simplified. Racine: Wis, 1924.
Cita MLA (9th ed.)Duston, Merle. Radio Theory Simplified. Wis, 1924.
Atenció: Aquestes cites poden no estar 100% correctes.