Dr. Michael Colgan. "Optimum Sports Nutrition". 1993.
R.H. Matthews, P.R. Pehrsson, M. Farhat-Sabet. "Sugar Content of Selected Foods: Individual and Total Sugars". 1987 Home Economics Research Report Number 48
Nutrient Data Laboratory, ARS, USDA. "Nutrient content of ethnic and geographic specific foods, Southern Testing and Research Laboratories". 1995 Beltsville MD
Nutrient Data Laboratory, ARS, USDA. "Choline Study, Local pickup VPI, NFNAP". 2006 Beltsville MD