Hauser, G. F. (1977). Soil fertility investigations on farmers' fields (2. print.). Food and Agriculture Organization of the United Nations.
Chicago-Zitierstil (17. Ausg.)Hauser, G. F. Soil Fertility Investigations on Farmers' Fields. 2. print. Rome: Food and Agriculture Organization of the United Nations, 1977.
MLA-Zitierstil (9. Ausg.)Hauser, G. F. Soil Fertility Investigations on Farmers' Fields. 2. print. Food and Agriculture Organization of the United Nations, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.