United States. National Aeronautics and Space Administration. Office of Inspector General. (2011). NASA's challenges certifying and acquiring commercial crew transportation services. Office of Audits, Office of Inspector General, National Aeronautics and Space Administration.
Chicago Style (17th ed.) CitationUnited States. National Aeronautics and Space Administration. Office of Inspector General. NASA's Challenges Certifying and Acquiring Commercial Crew Transportation Services. [Washington, D.C.]: Office of Audits, Office of Inspector General, National Aeronautics and Space Administration, 2011.
MLA (9th ed.) CitationUnited States. National Aeronautics and Space Administration. Office of Inspector General. NASA's Challenges Certifying and Acquiring Commercial Crew Transportation Services. Office of Audits, Office of Inspector General, National Aeronautics and Space Administration, 2011.