APA

Nutrient Data Laboratory (U.S.), Food Composition Laboratory (U.S.), . (2007). USDA database for the flavonoid content of selected foods. Beltsville, Md: U.S. Dept. of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Nutrient Data Laboratory.

Chicago

Nutrient Data Laboratory (U.S.), Food Composition Laboratory (U.S.), . 2007. USDA database for the flavonoid content of selected foods. Beltsville, Md: U.S. Dept. of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Nutrient Data Laboratory.

Harvard

Nutrient Data Laboratory (U.S.), Food Composition Laboratory (U.S.), . (2007). USDA database for the flavonoid content of selected foods. Beltsville, Md: U.S. Dept. of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Nutrient Data Laboratory.

MLA

Nutrient Data Laboratory (U.S.), Food Composition Laboratory (U.S.), . USDA database for the flavonoid content of selected foods. Beltsville, Md: U.S. Dept. of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Nutrient Data Laboratory. 2007.