Não informado. (1999). Bulletin of the Czech Geological Survey. Czech Geological Survey.
Lua i Stíl Chicago (17ú heag.)Não informado. Bulletin of the Czech Geological Survey. Praha: Czech Geological Survey, 1999.
Lua MLA (8ú heag.)Não informado. Bulletin of the Czech Geological Survey. Czech Geological Survey, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.