APA ציטוט

Li, Z., Ye, R., Zhang, L., Li, H., Liu, J., & Ren, A. (2014). Periconceptional folic acid supplementation and the risk of preterm births in China: A large prospective cohort study. Int J Epidemiol.

Citação norma Chicago

Li, Zhiwen, Rongwei Ye, Le Zhang, Hongtian Li, Jianmeng Liu, and Aiguo Ren. "Periconceptional Folic Acid Supplementation and the Risk of Preterm Births in China: A Large Prospective Cohort Study." Int J Epidemiol 2014.

ציטוט MLA

Li, Zhiwen, et al. "Periconceptional Folic Acid Supplementation and the Risk of Preterm Births in China: A Large Prospective Cohort Study." Int J Epidemiol 2014.