Ugwa, E., A. Ashimi, and M. Abubakar. “Caesarean Section and Perinatal Outcome in a Sub-Urban Tertiary Hospital in Northwest Nigeria”. Nepal Journal of Obstetrics and Gynaecology, vol. 10, no. 2, Jan. 2016, pp. 29-32, https://nepjol.info./index.php/NJOG/article/view/14332.