Não informado. (1985). National Geographic Research. National Geographic Society.
Lua i Stíl Chicago (17ú heag.)Não informado. National Geographic Research. Gaithersburg, Md: National Geographic Society, 1985.
Lua MLA (8ú heag.)Não informado. National Geographic Research. National Geographic Society, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.