Budjuntra , . R. (2022). The development of a learning management model based on the teaching approach that integrates the philosophy of sufficiency economy to promote desirable characteristics of grade 4 students Social studies, Religion, and Culture Department. Journal of Graduate MCU KhonKaen Campus, 9(4), 230–244. Retrieved from https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/258024