Rapp. (2013). Use of Extraterrestrial Resources for Human Space Missions to Moon or Mars (1.). Springer Berlin Heidelberg.
Cita Chicago (17th ed.)Rapp. Use of Extraterrestrial Resources for Human Space Missions to Moon or Mars. 1. Springer Berlin Heidelberg, 2013.
Cita MLA (8th ed.)Rapp. Use of Extraterrestrial Resources for Human Space Missions to Moon or Mars. 1. Springer Berlin Heidelberg, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.