European Aerospace Conference on Progress in Space Transportationn, European Space Agency, & Association aéronautique et astronautique de France. (1989). Proceedings of the second European Aerospace Conference on Progress in Space Transportation: 22-24 May 1989, Bonn Bad Godesberg, FR Germany. ESA Publications Division.
Cita Chicago Style (17a ed.)European Aerospace Conference on Progress in Space Transportationn, European Space Agency, y Association aéronautique et astronautique de France. Proceedings of the Second European Aerospace Conference on Progress in Space Transportation: 22-24 May 1989, Bonn Bad Godesberg, FR Germany. Noordwijk: ESA Publications Division, 1989.
Cita MLA (9a ed.)European Aerospace Conference on Progress in Space Transportationn, et al. Proceedings of the Second European Aerospace Conference on Progress in Space Transportation: 22-24 May 1989, Bonn Bad Godesberg, FR Germany. ESA Publications Division, 1989.
