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Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Dillon S. Maguire. Exploring the Final Frontier: Issues, Plans and Funding for NASA. New York: Nova Science Publishers, 2010.
Lua MLA (9ú heag.)ebrary, Inc, agus Dillon S. Maguire. Exploring the Final Frontier: Issues, Plans and Funding for NASA. Nova Science Publishers, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.