Não informado. (1956). Metallurgical Reviews. Institute of Metals.
Lua i Stíl Chicago (17ú heag.)Não informado. Metallurgical Reviews. London: Institute of Metals, 1956.
Lua MLA (8ú heag.)Não informado. Metallurgical Reviews. Institute of Metals, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.