Food and Drug Administration - Food and Drug Administration
- http://www.fda.gov/default.htm
- United States Department of Health and Human Services
Kew Royal Botanic Gardens - Kew Royal Botanic Gardens
- http://www.kew.org/
- Department of Environment, Food, and Rural Affairs - UK
American Journal of Clinical Nutrition - The American Journal of Clinical Nutrition
- 03 nov 2014
- http://ajcn.nutrition.org/site/misc/about.xhtml
- American Society for Nutrition
USDA Plants Database - USDA PLANTS DATABASE
- Natural Resources Conservation Service
- 23 jul 2014
- http://plants.usda.gov/java
- United States Department of Agriculture (USDA)
