Basuki, Bastaman. “Risk of Ectopic Pregnancy Associated With Gynecological History, past Contraceptive Use, and Smoking Habit”. Medical Journal of Indonesia 8, no. 3 (July 1, 1999): 182–9. Accessed November 11, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/707.