Azyati, M., M. A. Akbar, and S. Sudarno. “Profile of Patients With Post Partum Hemorrhage in Dr. Soetomo Hospital, Surabaya, January 2011 - December 2013”. Majalah Obstetri & Ginekologi, vol. 24, no. 2, Mar. 2018, pp. 43-48, doi:10.20473/mog.V24I22016.43-48.