Sianipar, Imelda. “METODE NON FARMAKOLOGIS PENGURANG RASA NYERI SELAMA PERSALINAN”. Jurnal Ilmu Kesehatan Immanuel 12, no. 1 (June 30, 2018): 52–55. Accessed May 17, 2025. http://www.ojslast.institutkesehatan-immanuel.ac.id/index.php/JIKI/article/view/31.