Dr. Michael Colgan. "Optimum Sports Nutrition". 1993.
J L Bureau, R J Bushway. "HPLC determination of carotenoids in fruits and vegetables in the United States". 1986 J Food Sci 52 Pg. 128 - 130
S.L. Booth, J.A. Sadowski, J.A. T. Pennington. "Phylloquinone (Vitamin K) Content of Foods in the U.S. Food and Drug Administration's Total Diet Study". 1995 Journal of Agricultural and Food Chemistry 43 6 Pg. 1574 - 1579
G. Ferland, D. MacDonald, J.A. Sadowski. "Development of a diet low in vitamin K (phylloquinone)". 1992 J. American Dietetic Assoc 92 5 Pg. 593 - 597
National Institutes of Health (NIH). "Carotenoid analyses of U.S. foods, Food Composition Laboratory". 1997
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 5i". 2001 Beltsville MD
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 5f". 2001 Beltsville MD
Nutrient Data Laboratory, ARS, USDA. "Determination of the Tocopherol Content of Selected Foods". 1992 Beltsville MD