LERTMANOP, P.; PETPON, P.; KULOPHAS, D. A Needs Assessment on How to Develop Virtuous Leadership in Secondary School Administrators. Educational Management and Innovation Journal, [S. l.], v. 9, n. 1, p. 85–98, 2026. Disponível em: https://so01.tci-thaijo.org/index.php/emi/article/view/281150. Acesso em: 29 ส.ค. 2026.