McIntosh, C. H. (1941). Radio range flying. Ringer press.
Lua i Stíl Chicago (17ú heag.)McIntosh, Colin Hugh. Radio Range Flying. Chicago, Ill.: Ringer press, 1941.
Lua MLA (8ú heag.)McIntosh, Colin Hugh. Radio Range Flying. Ringer press, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.