Dr. Michael Colgan. "Optimum Sports Nutrition". 1993.
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1997
Nutrient Data Laboratory, ARS, USDA. "Choline Study, Local pickup UNC, NFNAP". 2003 Beltsville MD
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1991
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1992
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1993
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1994
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
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1995
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 6c". 2002 Beltsville MD
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 6e". 2002 Beltsville MD
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 6g". 2002 Beltsville MD
Food and Drug Administration (FDA), DHHS. "FDA Total Diet Study". 1996
Nutrient Data Laboratory, ARS, USDA. "National Food and Nutrient Analysis Program Wave 5o". 2001 Beltsville MD