Não informado. (1963). 33: Magazine of the metals producing industry. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Não informado. 33: Magazine of the Metals Producing Industry. New York: McGraw-Hill, 1963.
Lua MLA (8ú heag.)Não informado. 33: Magazine of the Metals Producing Industry. McGraw-Hill, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.