Heni Frilasari, and Heri Triwibowo. “PENERAPAN TEKNIK RELAKSASI PROGRESIF TERHADAP DERAJAT NYERI PERSALINAN KALA 1 FASE AKTIF”. Jurnal Keperawatan 13, no. 1 (January 31, 2020): 7. Accessed May 25, 2026. https://e-journal.lppmdianhusada.ac.id/index.php/jk/article/view/27.