Não informado. (1955). Information circular. Wisconsin Geological and Natural History Survey.
Lua i Stíl Chicago (17ú heag.)Não informado. Information Circular. Madison, Wis: Wisconsin Geological and Natural History Survey, 1955.
Lua MLA (8ú heag.)Não informado. Information Circular. Wisconsin Geological and Natural History Survey, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.