USDA & Economic research service. (2001). Agri-environment polisy at the crossroads: Guideposts on a changing landscape; agricultural economic report No794.
Chicago-Zitierstil (17. Ausg.)USDA und Economic research service. Agri-environment Polisy at the Crossroads: Guideposts on a Changing Landscape; Agricultural Economic Report No794. 2001.
MLA-Zitierstil (9. Ausg.)USDA und Economic research service. Agri-environment Polisy at the Crossroads: Guideposts on a Changing Landscape; Agricultural Economic Report No794. 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.