Yusi Revi, Titin Dewi Sartika Silaban, and Sri Handayani. “ANALISIS HUBUNGAN USIA, PARITAS, DAN KECEMASAN DENGAN INTENSITAS NYERI PERSALINAN KALA I FASE AKTIF”. Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) 17, no. 2 (August 30, 2022): 316–321. Accessed August 27, 2025. https://ojs.poltekkes-medan.ac.id/pannmed/article/view/1342.