Bhatt, M. J., G. K. Kadikar, M. Kanani, and S. Shah. “Comparison of Normal and Abnormal Labour by Using Modified WHO Partograph”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 4, Mar. 2018, pp. 1440-5, doi:10.18203/2320-1770.ijrcog20181332.