United States. Department of Agriculture. Human Nutrition Information Service. (1992). USDA's food guide pyramid. U.S. Dept. of Agriculture.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Human Nutrition Information Service. USDA's Food Guide Pyramid. Hyattsville, MD: U.S. Dept. of Agriculture, 1992.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Human Nutrition Information Service. USDA's Food Guide Pyramid. U.S. Dept. of Agriculture, 1992.
Warning: These citations may not always be 100% accurate.