“The Effect of Progressive Muscle Relaxation on Fear of Childbirth in Primigravida Mothers”. JURNAL KEBIDANAN KESTRA (JKK) 8, no. 1 (October 31, 2025): 85–92. Accessed November 3, 2025. https://ejournal.medistra.ac.id/index.php/JKK/article/view/3202.