PROOMA, W.; DUANGWILAI, D. The Development of a guideline management of learning the philosophy of sufficiency economy in schools the Office in the Secondary Education Service Area 21. Journal of Education Khon Kaen University (Graduate Studies Research), [S. l.], v. 13, n. 2, p. 75–86, 2019. Disponível em: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/216848. Acesso em: 5 may. 2024.