APA (7th ed.) Citation

United States. Agricultural Research Service & Sharpley, A. N. (1999). Agricultural phosphorus and eutrophication. U.S. Dept. of Agriculture, Agricultural Research Service.

Chicago Style (17th ed.) Citation

United States. Agricultural Research Service and Andrew N. Sharpley. Agricultural Phosphorus and Eutrophication. [University Park, Pa.]: U.S. Dept. of Agriculture, Agricultural Research Service, 1999.

MLA (9th ed.) Citation

United States. Agricultural Research Service and Andrew N. Sharpley. Agricultural Phosphorus and Eutrophication. U.S. Dept. of Agriculture, Agricultural Research Service, 1999.