Não informado. (1934). Memoir of the Geological Society of America. Geological Society of America.
Lua i Stíl Chicago (17ú heag.)Não informado. Memoir of the Geological Society of America. Washington: Geological Society of America, 1934.
Lua MLA (8ú heag.)Não informado. Memoir of the Geological Society of America. Geological Society of America, 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.