Amat, Marzan, and Azizah Zain. “Importance of Health Education Among Children in the Aspect of Keeping Cleanliness to Prevent COVID-19”. Evaluation Studies in Social Sciences 10, no. 1 (May 18, 2021): 17-21. Accessed October 24, 2021. https://ejournal.upsi.edu.my/index.php/ESSS/article/view/5281.