Heni Frilasari, and Heri Triwibowo. “PENERAPAN TEKNIK RELAKSASI PROGRESIF TERHADAP DERAJAT NYERI PERSALINAN KALA 1 FASE AKTIF”. Jurnal Keperawatan, Vol. 13, no. 1, Jan. 2020, p. 7, https://e-journal.lppmdianhusada.ac.id/index.php/jk/article/view/27.