1. Longitudinal assessment of micronutrient intake among African–American and white girls: the National Heart, Lung, and Blood Institute Growth and Health Study;Affenito;Journal of the American Dietetic Association,2007
2. AOAC, 2007a. Official Methods of Analysis of AOAC INTERNATIONAL. Method 982.29—Vitamin D in Mixed Feeds, Premixes, and Pet Foods, 18th ed. Gaithersburg, MD.
3. AOAC, 2007b. Official Methods of Analysis of AOAC INTERNATIONAL. Method 992.26—Vitamin D3 (Cholecalciferol) in Ready-to-Feed Milk-Based Infant Formula, 18th ed. Gaithersburg, MD.
4. AOAC, 2007c. Official Methods of Analysis of AOAC INTERNATIONAL. Method 995.05—Vitamin D in Infant Formulas and Enteral Products, 18th ed. Gaithersburg, MD.
5. AOAC, 2007d. Official Methods of Analysis of AOAC INTERNATIONAL. Method 2002.05—Determination of cholecalciferol (vitamin D3) in selected foods, 18th ed. Gaithersburg, MD.