Não informado. (1968). Materials today. American Society for Metals.
Lua i Stíl Chicago (17ú heag.)Não informado. Materials Today. Cleveland, Ohio: American Society for Metals, 1968.
Lua MLA (8ú heag.)Não informado. Materials Today. American Society for Metals, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.