Thidaporn Jirawattanapaisal และผู้แต่งคนอื่นๆ. (2000) Folate status in healty women, pregnancy and women taking oral contraceptives in Health Promotion Center region 4 Ratchaburi. Chulalongkorn University,:ม.ป.ท.Thidaporn Jirawattanapaisal และผู้แต่งคนอื่นๆ. 2000. Folate status in healty women, pregnancy and women taking oral contraceptives in Health Promotion Center region 4 Ratchaburi. ม.ป.ท.:Chulalongkorn University,;Thidaporn Jirawattanapaisal และผู้แต่งคนอื่นๆ. Folate status in healty women, pregnancy and women taking oral contraceptives in Health Promotion Center region 4 Ratchaburi. ม.ป.ท.:Chulalongkorn University, 2000. Print.