Hurni, H. (1995). Guidelines for development agents on soil conservation in Ethiopia (Reprint.). Ministry of Natural Resources Development and Environmental Protection, Watershed Development and Land Use Dep.
Chicago-Zitierstil (17. Ausg.)Hurni, Hans. Guidelines for Development Agents on Soil Conservation in Ethiopia. Reprint. Addis Abeba: Ministry of Natural Resources Development and Environmental Protection, Watershed Development and Land Use Dep, 1995.
MLA-Zitierstil (9. Ausg.)Hurni, Hans. Guidelines for Development Agents on Soil Conservation in Ethiopia. Reprint. Ministry of Natural Resources Development and Environmental Protection, Watershed Development and Land Use Dep, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.