Não informado. (1967). Welding research news. Welding Research Council.
Lua i Stíl Chicago (17ú heag.)Não informado. Welding Research News. New York: Welding Research Council, 1967.
Lua MLA (8ú heag.)Não informado. Welding Research News. Welding Research Council, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.