Não informado. (1989). Celestial Mechanics & Dynamical Astronomy: An international journal of space dynamics. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Celestial Mechanics & Dynamical Astronomy: An International Journal of Space Dynamics. Dordrecht, Holanda: Kluwer Academic Publishers, 1989.
Lua MLA (8ú heag.)Não informado. Celestial Mechanics & Dynamical Astronomy: An International Journal of Space Dynamics. Kluwer Academic Publishers, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.