Etty CR, Damanik E, Barus E, Salamanang LW. PERILAKU IBU TENTANG MANAJEMEN NYERI TERHADAP LAMANYA PERSALINAN. PREPOTIF [Internet]. 2023Dec.20 [cited 2024May13];6(1):448-54. Available from: http://journal.universitaspahlawan.ac.id/index.php/prepotif/article/view/2449