Rai, S. D., E. van Teijlingen, P. Regmi, J. Wood, G. Dangal, and K. B. Dhakal. “Classification of Caesarean Section: A Scoping Review of the Robson Classification”. Nepal Journal of Obstetrics and Gynaecology, vol. 16, no. 1, June 2021, pp. 2-9, https://nepjol.info./index.php/NJOG/article/view/37409.