Payne, B. R. (1972). Accelerated roadbuilding on the North Umpqua: An economic analysis. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service.
Chicago-Zitierstil (17. Ausg.)Payne, Brian R. Accelerated Roadbuilding on the North Umpqua: An Economic Analysis. Portland, Or: Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1972.
MLA-Zitierstil (9. Ausg.)Payne, Brian R. Accelerated Roadbuilding on the North Umpqua: An Economic Analysis. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.