Não informado. (1947). Information Circular. State of California, Department of Natural Resources, Division of Mines.
Lua i Stíl Chicago (17ú heag.)Não informado. Information Circular. San Francisco, Calif: State of California, Department of Natural Resources, Division of Mines, 1947.
Lua MLA (8ú heag.)Não informado. Information Circular. State of California, Department of Natural Resources, Division of Mines, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.