(1994). Challenges of space for a better world: Selected proceedings of the 44th International Astronautical Federation congress, Graz, Austria, 16 - 22 October 1993. Pergamon Press.
Chicago-Zitierstil (17. Ausg.)Challenges of Space for a Better World: Selected Proceedings of the 44th International Astronautical Federation Congress, Graz, Austria, 16 - 22 October 1993. Oxford u.a: Pergamon Press, 1994.
MLA-Zitierstil (9. Ausg.)Challenges of Space for a Better World: Selected Proceedings of the 44th International Astronautical Federation Congress, Graz, Austria, 16 - 22 October 1993. Pergamon Press, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.