United States. National Aeronautics and Space Administration. History Office & Dick, S. J. (2007). America in space: NASA's first fifty years. Abrams.
Cita Chicago Style (17a ed.)United States. National Aeronautics and Space Administration. History Office y Steven J. Dick. America in Space: NASA's First Fifty Years. New York: Abrams, 2007.
Cita MLA (8a ed.)United States. National Aeronautics and Space Administration. History Office y Steven J. Dick. America in Space: NASA's First Fifty Years. Abrams, 2007.
Precaución: Estas citas no son 100% exactas.