Nutrisia Nu’im Haiya and Ardian, I. 2023. The Effectiveness of Audio Visual Media and Snakes and Ladders Washing Hands on Knowledge of School Age Children. Jurnal kesehatan komunitas (Journal of community health). 9, 2 (Jul. 2023), 231–239. DOI:https://doi.org/10.25311/keskom.Vol9.Iss2.1398.