1. Institute of Medicine (US), Standing Committee on the Scientific Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline. Dietary reference intakes for thiamin, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic acid, biotin, and choline, National Academies Press, Washington, DC. Chapter 8, Folate (1998) pp. 196–305.
2. Plasma and red cell folate values and folate requirements in formula-fed term infants;Ek;J. Pediatr.,1982
3. Comparison of micronutrient intake measured by a dietary questionnaire and biochemical indicators of micronutrient status;Jacques;Am. J. Clin. Nutr.,1993
4. Folate deficiency in the alcoholic—its relationship to clinical and haematological abnormalities, liver disease and folate stores;Wu;Br. J. Haematol.,1975
5. Concentrations of unmetabolized folic acid and primary folate forms in pregnant women at delivery and in umbilical cord blood;Obeid;Am. J. Clin. Nutr.,2010