APA (7th ed.) Citation

United States. Dept. of Agriculture. Economic Research Service. (1991). World agriculture. U.S. Dept. of Agriculture, Economic Research Service.

Chicago Style (17th ed.) Citation

United States. Dept. of Agriculture. Economic Research Service. World Agriculture. Washington, D.C.: U.S. Dept. of Agriculture, Economic Research Service, 1991.

MLA (8th ed.) Citation

United States. Dept. of Agriculture. Economic Research Service. World Agriculture. U.S. Dept. of Agriculture, Economic Research Service, 1991.