(1964). Vol. 33, № 264; Mineralogical magazine. 1964.
Lua i Stíl Chicago (17ú heag.)Vol. 33, № 264; Mineralogical Magazine. 1964, 1964.
Lua MLA (9ú heag.)Vol. 33, № 264; Mineralogical Magazine. 1964, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.