V. MOONKONGSRI, A. BUARAPA, S. KAMPRASIT, and N. MOLYOOPANAO, “IMPACT OF A FOOD SANITATION PROGRAM ON KNOWLEDGE AND BEHAVIOR OF PRIMARY SCHOOL FOOD HANDLERS MUEANG LOEI DISTRICT, LOEI PROVINCE”, Prim. Health Care j. (Cent. Ed.), vol. 40, no. 2, pp. 5–14, Aug. 2026.