London, C. C. (1975). Quality skiing at Aspen, Colorado: A study in recreational carrying capacity.
Chicago-Zitierstil (17. Ausg.)London, Coe C. Quality Skiing at Aspen, Colorado: A Study in Recreational Carrying Capacity. Boulder, Col, 1975.
MLA-Zitierstil (9. Ausg.)London, Coe C. Quality Skiing at Aspen, Colorado: A Study in Recreational Carrying Capacity. 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.