Não informado. (1957). Journal of the Astronautical Sciences. American Astronautical Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of the Astronautical Sciences. New York: American Astronautical Society, 1957.
Lua MLA (8ú heag.)Não informado. Journal of the Astronautical Sciences. American Astronautical Society, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.