Abadi, A., Ali Baziad, and Andon Hestiantoro. “The Benefits of Progesterone Therapy in Imminent Abortion”. Medical Journal of Indonesia 14, no. 4 (November 1, 2005): 258-66. Accessed October 23, 2021. http://mji.ui.ac.id/journal/index.php/mji/article/view/205.