Saadah, M., S. H. Respati, and O. P. Aristin. “Multilevel Analysis on the Risk Factors of Post Partum Hemorrhage in Bondowoso, Central Java”. Journal of Maternal and Child Health, vol. 1, no. 4, Feb. 2017, pp. 205-13, http://thejmch.com/index.php/thejmch/article/view/30.