1. Cunningham F, Leveno K, Bloom S, Spong CY, Dashe J. Williams obstetrics, 24e: Mcgraw-hill; 2014.
2. Predictors of preference for caesarean delivery among pregnant women in Beijing
3. Maternal age and the likelihood of a maternal request for cesarean delivery: A 5-year population-based study
4. Pirdehghan A. Evaluation and comparison of normal vaginal delivery and elective cesarean section burden in Isfahan city Iran: Isfahan; 2010.
5. Babaei F, Aghajani M, Estambolichi L, Joshari M, Mazaheri Z, Kykhosravi F, Maher A. Study of the promotion of normal delivery program in government hospitals in line with the health transformation plan and its achievements. Hakim Research Journal. 2017 Apr 10;20(1):44-53.