(1963). Vol. 58, № 1; Economic Geology. 1963.
Lua i Stíl Chicago (17ú heag.)Vol. 58, № 1; Economic Geology. 1963, 1963.
Lua MLA (9ú heag.)Vol. 58, № 1; Economic Geology. 1963, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.