Não informado. (1987). Astrophysical Letters & Communications. Gordon and Breach Science Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Astrophysical Letters & Communications. New York: Gordon and Breach Science Publishers, 1987.
Lua MLA (8ú heag.)Não informado. Astrophysical Letters & Communications. Gordon and Breach Science Publishers, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.