APA

Asner G. R., Garber S. J. & United States. (2019). Origins of 21st Century space travel: a history of NASA's Decadal Planning Team and the vision for space exploration, 1999-2004. Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division.

Chicago

Asner Glen R, Garber Stephen J and United States. 2019. Origins of 21st Century space travel: a history of NASA's Decadal Planning Team and the vision for space exploration, 1999-2004. Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division.

Harvard

Asner G. R., Garber S. J. and United States. (2019). Origins of 21st Century space travel: a history of NASA's Decadal Planning Team and the vision for space exploration, 1999-2004. Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division.

MLA

Asner Glen R, Garber Stephen J and United States. Origins of 21st Century space travel: a history of NASA's Decadal Planning Team and the vision for space exploration, 1999-2004. Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division. 2019.