Pitriani, Risa. “Relationship Between Education, Knowledge and the Role of Health Worker and the Intra Uterine Device (IUD) in the Health Center Area of Muara Fajar Pekanbaru”. Jurnal Kesehatan Komunitas 3, no. 1 (November 1, 2015): 25–28. Accessed December 5, 2022. https://jurnal.htp.ac.id/index.php/keskom/article/view/97.