PREEPUL, D.; VAJIRAPANYO, P. D.; BAMRUNGPHAK, S. The Development of Ethics of Professional Teachers under the Office of Kalasin Primary Education Service Area I. Journal of Graduate MCU KhonKaen Campus, [S. l.], v. 6, n. 4, p. 97–108, 2019. Disponível em: https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/230142. Acesso em: 10 oct. 2026.