David, J. E. (2015). Spies and shuttles: NASA's secret relationships with the DOD and CIA. Smithsonian National Air and Space Museum.
Lua i Stíl Chicago (17ú heag.)David, James E. Spies and Shuttles: NASA's Secret Relationships with the DOD and CIA. Washington, District of Columbia: Smithsonian National Air and Space Museum, 2015.
Lua MLA (9ú heag.)David, James E. Spies and Shuttles: NASA's Secret Relationships with the DOD and CIA. Smithsonian National Air and Space Museum, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.