Novitasari, Jennie, et al. “Key Factors Influence the Expenditure of Breast Milk in Post-Sectio Cesareana Mothers at Regional Hospital Batam, Indonesia”. Jurnal Perilaku Kesehatan Terpadu, vol. 3, no. 1, Sept. 2024, pp. 74-90, doi:10.61963/jpkt.v3i1.93.