Purba, Yeni Trisna. “Midwife Care in Ny. W 29 Years With Placenta Retension at the Midwife Clinic of L. Pangaribuan Village Simantin Pane Dame”. Science Midwifery 10, no. 2 (March 31, 2022): 751–754. Accessed April 18, 2026. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/357.