Duston, M. (1924). Radio theory simplified. Wis.
Lua i Stíl Chicago (17ú heag.)Duston, Merle. Radio Theory Simplified. Racine: Wis, 1924.
Lua MLA (9ú heag.)Duston, Merle. Radio Theory Simplified. Wis, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.