EFEKTIVITAS DEEP BREATHING RELAXATION SEBAGAI PERSIAPAN PERSALINAN DALAM MENURUNKAN KECEMASAN PADA IBU HAMIL PRIMIGRAVIDA. OVUM : Journal of Midwifery and Health Sciences, [S. l.], v. 5, n. 2, p. 138–149, 2025. DOI: 10.47701/kxn0rs94. Disponível em: https://ojs.udb.ac.id/ovum/article/view/5601. Acesso em: 3 may. 2026.