Christy, L. C. (1972). Legislative principles of soil conservation. Food and Agriculture Organization of the United Nations.
Chicago-Zitierstil (17. Ausg.)Christy, Lawrence C. Legislative Principles of Soil Conservation. Rome: Food and Agriculture Organization of the United Nations, 1972.
MLA-Zitierstil (9. Ausg.)Christy, Lawrence C. Legislative Principles of Soil Conservation. Food and Agriculture Organization of the United Nations, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.