Não informado. (1950). IMM Abstracts. Institution of Mining and Metallurgy.
Lua i Stíl Chicago (17ú heag.)Não informado. IMM Abstracts. London: Institution of Mining and Metallurgy, 1950.
Lua MLA (8ú heag.)Não informado. IMM Abstracts. Institution of Mining and Metallurgy, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.