E. Erfiyanto, S. Suwitri, and A. Rohman, “Implementation of the Free Nutritious Meals Policy in Early Childhood Education at Aisyiyah Leksono Preschool and Pembina Selomerto Public Preschool, Wonosobo Regency”, IJSOC, vol. 8, no. 4, pp. 733-743, Nov. 2026.