Não informado. (1999). Missouri geological survey. Tribune Printing.
Lua i Stíl Chicago (17ú heag.)Não informado. Missouri Geological Survey. Jefferson City, Mo: Tribune Printing, 1999.
Lua MLA (8ú heag.)Não informado. Missouri Geological Survey. Tribune Printing, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.