Tabinda Khalid , Nisar Ahmed Malik , Zainab Sarfraz , T. K. , N. A. M. , Z. S. . . “Effect of Intraumbilical Oxytocin on Duration of Third Stage of Labour”. Journal of Rawalpindi Medical College, vol. 21, no. 3, Sept. 2017, http://journalrmc.com/index.php/JRMC/article/view/24.