Não informado. (1937). Welding Journal. American Welding Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Welding Journal. Miami, Fla: American Welding Society, 1937.
Lua MLA (8ú heag.)Não informado. Welding Journal. American Welding Society, 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.