Não informado. (1952). Minerals Yearbook. Bureau of Mines.
Lua i Stíl Chicago (17ú heag.)Não informado. Minerals Yearbook. Washington: Bureau of Mines, 1952.
Lua MLA (8ú heag.)Não informado. Minerals Yearbook. Bureau of Mines, 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.