นามโยธา อ. The Structural Relationship Model Development of Adminitrators’ Competencies toward School Effectiveness. Journal of the Association of Researchers, [S. l.], v. 18, n. 3, p. 20–29, 2020. Disponível em: https://so04.tci-thaijo.org/index.php/jar/article/view/241163. Acesso em: 16 sep. 2026.