(1993). Transportation facilities through difficult terrain: Proceedings of the Conference on Transportation Facilities through Difficult Terrain, Aspen-Snowmass, Colorado, USA 8-12 August 1993. Balkema.
Chicago-Zitierstil (17. Ausg.)Transportation Facilities Through Difficult Terrain: Proceedings of the Conference on Transportation Facilities Through Difficult Terrain, Aspen-Snowmass, Colorado, USA 8-12 August 1993. Rotterdam [u.a.]: Balkema, 1993.
MLA-Zitierstil (9. Ausg.)Transportation Facilities Through Difficult Terrain: Proceedings of the Conference on Transportation Facilities Through Difficult Terrain, Aspen-Snowmass, Colorado, USA 8-12 August 1993. Balkema, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.