Hurni, H. (1979). [Guidelines for development agents on soil conservation in Ethiopia]. 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]. Addis Abeba: Ministry of Natural Resources Development and Environmental Protection, Watershed Development and Land Use Dep, 1979.
MLA-Zitierstil (9. Ausg.)Hurni, Hans. [Guidelines for Development Agents on Soil Conservation in Ethiopia]. Ministry of Natural Resources Development and Environmental Protection, Watershed Development and Land Use Dep, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.