Nang Htang, L., and S. Chanseangsee. “Child-Friendly School Improvement Guideline for Lower Secondary Schools in the Kachin Area of Myanmar”. Kasetsart Journal of Social Sciences, vol. 43, no. 1, Feb. 2022, pp. 209–216, https://so04.tci-thaijo.org/index.php/kjss/article/view/257017.