Não informado. Nasa Memorandum. National Aeronautics and Space Administration.
Lua i Stíl Chicago (17ú heag.)Não informado. Nasa Memorandum. Washington: National Aeronautics and Space Administration.
Lua MLA (8ú heag.)Não informado. Nasa Memorandum. National Aeronautics and Space Administration.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.