Não informado. (1969). Bulletin of the American Astronomical Society. American Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Bulletin of the American Astronomical Society. New York: American Institute of Physics, 1969.
Lua MLA (8ú heag.)Não informado. Bulletin of the American Astronomical Society. American Institute of Physics, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.