United States. National Aeronautics and Space Administration. Astrophysics Performance Assessment Committee & ebrary, Inc. (2007). A performance assessment of NASA's Astrophysics Program. National Research Council.
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Chicago-referens (17:e uppl.)
United States. National Aeronautics and Space Administration. Astrophysics Performance Assessment Committee och Inc ebrary. A Performance Assessment of NASA's Astrophysics Program. Washington, D.C.: National Research Council, 2007.
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MLA-referens (9:e uppl.)
United States. National Aeronautics and Space Administration. Astrophysics Performance Assessment Committee och Inc ebrary. A Performance Assessment of NASA's Astrophysics Program. National Research Council, 2007.
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Kopiering till urklipp misslyckades
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.