Norman, D. W. (1994). Farming systems development and soil conservation. Rome: Food and Agriculture Organization of the United Nations.
Chicago-stil citatNorman, D. W. Farming Systems Development and Soil Conservation. Rome: Food and Agriculture Organization of the United Nations, 1994.
MLA-referensNorman, D. W. Farming Systems Development and Soil Conservation. Rome: Food and Agriculture Organization of the United Nations, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.