Não informado. (1960). National Geographic. National Geographic Society.
Lua i Stíl Chicago (17ú heag.)Não informado. National Geographic. Washington: National Geographic Society, 1960.
Lua MLA (8ú heag.)Não informado. National Geographic. National Geographic Society, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.