USDA & Economic research service. (2001). Agri-environment polisy at the crossroads: Guideposts on a changing landscape; agricultural economic report No794.
Citação do estilo Chicago (17ª ed.)USDA e Economic research service. Agri-environment Polisy at the Crossroads: Guideposts on a Changing Landscape; Agricultural Economic Report No794. 2001.
Citação MLA (9ª ed.)USDA e Economic research service. Agri-environment Polisy at the Crossroads: Guideposts on a Changing Landscape; Agricultural Economic Report No794. 2001.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.