R. Wulandari, “An Analysis of Mother’s Knowledge about the Benefits of Katuk Leaves as Food to Increase Breast Milk Production in Saba Sitahul-Tahul Village, Portibi District, North Padang Lawas Regency Year 2022”, Int Jou of PHE, vol. 2, no. 1, pp. 329–332, Dec. 2022.