Herbert V. Folic Acid. (編) Shils ME, Olson J, Shike M, Ross AC. Modern nutrition in health and disease 9th. Baltimore: Williams and Wilkins. 1999. ISBN 0-683-30769-X.
Food and Nutrition Board, Institute of Medicine. Dietary reference intakes for thiamin, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic acid, biotin, and choline / a report of the Standing Committee on the Scientific Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline and Subcommittee on Upper Reference Levels of Nutrients. Washington, D.C.: National Academy Press. 1998. ISBN 0-309-06554-2.
Dietary Guidelines Advisory Committee, Agricultural Research Service, United States Department of Agriculture (USDA). Report of the Dietary Guidelines Advisory Committee on the Dietary Guidelines for Americans, 2010. http://www.cnpp.usda.gov/dgas2010-dgacreport.htm