APA (7th ed.) Citation

United States. Department of Agriculture. Economic Research Service & Ribaudo, M. (2011). Nitrogen in agricultural systems: Implications for conservation policy. U.S. Dept. of Agriculture, Economic Research Service.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Economic Research Service and Marc Ribaudo. Nitrogen in Agricultural Systems: Implications for Conservation Policy. [Washington, D.C.]: U.S. Dept. of Agriculture, Economic Research Service, 2011.

MLA (9th ed.) Citation

United States. Department of Agriculture. Economic Research Service and Marc Ribaudo. Nitrogen in Agricultural Systems: Implications for Conservation Policy. U.S. Dept. of Agriculture, Economic Research Service, 2011.