Dr. Michael Colgan. "Optimum Sports Nutrition". 1993.
C. Y. Lee. "Free sugars in fruits and vegetables". 1970 Food Science and Technology 1
I.M. Heinonen, V. Ollilainen, E. Linkola, P. Varo, P. Koivistoinen. "Carotenoids in Finnish Foods: Vegetables, Fruits, and Berries". 1989 Journal of Agriculture and Food Chemistry 37 Pg. 655 - 659
T.J. Koivu, V. I. Piironen, S.K. Henttonen, P.H. Mattila. "Determination of Phylloquinone in Vegetables, Fruits, and Berries by High-Performance Liquid Chromatography with Electrochemical Detection". 1997 American Chemical Society