Unkong, T., P. Lamnaknet, and A. Onaud. “Home School Guidelines for Fundamental Education, Case Study: Chiang Rai Province, Thailand”. Rajapark Journal, vol. 18, no. 58, June 2024, pp. 258-76, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/270376.