The Effect of Progressive Muscle Relaxation on Fear of Childbirth in Primigravida Mothers. JURNAL KEBIDANAN KESTRA (JKK), [S. l.], v. 8, n. 1, p. 85–92, 2025. DOI: 10.35451/3mcbpw15. Disponível em: https://ejournal.medistra.ac.id/index.php/JKK/article/view/3202. Acesso em: 3 nov. 2025.