Khong, Ling Huey, et al. “Effectiveness of Hand Washing Education on Knowledge, Attitude and Practice Among Orang Asli Kids in Gua Musang, Kelantan”. Malaysian Journal of Medical Sciences, vol. 32, no. 5, Oct. 2025, pp. 115–130, https://doi.org/10.21315/mjms-01-2025-059.