เพ็ญกุลกิจ ร.; ไทยใจดี ย. Instructional Leadership of School Administrators under the Secondary Educational Service Area Office 21. Journal of Roi Et Rajabhat University, [S. l.], v. 11, n. 2, p. 154–162, 2017. Disponível em: https://so03.tci-thaijo.org/index.php/reru/article/view/176358. Acesso em: 28 apr. 2024.