Widayati, W. et al. 2026. SPEOS Training and Qur’anic Murottal Therapy on Breast Milk Production, Sleep Quality, and Psychological Well-Being among Postpartum Mothers. Jurnal Ilmiah Kesehatan (JIKA). 8, 2 (Aug. 2026), 543–557. DOI:https://doi.org/10.36590/jika.v8i2.2099.