Não informado. (1957). Soviet astronomy. American Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Soviet Astronomy. New York: American Institute of Physics, 1957.
Lua MLA (8ú heag.)Não informado. Soviet Astronomy. American Institute of Physics, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.