- Vitamins: MedlinePlus
- Vitamins (Micronutrients) - New York Online Access to Health (NOAH)
- Vitamin and Mineral Supplement Fact Sheets - Office of Dietary Supplements. National Institutes of Health
- Vitamins and Minerals : Dietary Supplements : Food and Nutrition Information Center - National Agricultural Library. U.S. Department of Agriculture
- Nutrition for Everyone: Basics: Vitamins and Minerals | DNPAO | CDC - Centers for Disease Control and Prevention.
- Introduction: Vitamins: Merck Manual Home Edition
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- Vitamins – What Should You Eat? – The Nutrition Source – Harvard School of Public Health
- Linus Pauling Institute at Oregon State University - Micronutrient Information Center — Vitamins
