Não informado. (2005). Memoirs of the Geological Survey of Great Britain. HMSO.
Lua i Stíl Chicago (17ú heag.)Não informado. Memoirs of the Geological Survey of Great Britain. London: HMSO, 2005.
Lua MLA (8ú heag.)Não informado. Memoirs of the Geological Survey of Great Britain. HMSO, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.