Não informado. (2014). Geological Survey Professional Paper. U.S. Geological Survey Professional Paper.
Lua i Stíl Chicago (17ú heag.)Não informado. Geological Survey Professional Paper. Washington: U.S. Geological Survey Professional Paper, 2014.
Lua MLA (8ú heag.)Não informado. Geological Survey Professional Paper. U.S. Geological Survey Professional Paper, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.