(1979). Vol. 74, № 6; Economic Geology. 1979.
Lua i Stíl Chicago (17ú heag.)Vol. 74, № 6; Economic Geology. 1979, 1979.
Lua MLA (9ú heag.)Vol. 74, № 6; Economic Geology. 1979, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.