Affandi, Biran, H.M. Hoesni, R.P. Barus, Rizani Amran, Fitriani Iskandar, N.P. Noerpramono, Lila Dewata, et al. “A Multicentred Phase III Comparative Study Between Single-Implant Containing 3-Ketodesogestrel (Implanon®) and Implants Containing Levonorgestrel (Norplant®) II. Vaginal Bleeding Patterns”. Medical Journal of Indonesia 8, no. 1 (January 1, 1999): 56–61. Accessed April 4, 2025. http://mji.ui.ac.id/journal/index.php/mji/article/view/678.