MUANGNONGJOK, N.; CHA-UMPONG, T.; PAKDEEJIT, Y. A Study of The Characteristics of Professional Administrators under Phetchabun Primary Educational Service Area Office 1. Education journal Faculty of Education, Nakhon Sawan Rajabhat University , Nakhon Sawan,Thailand, v. 6, n. 2, p. 1–13, 2023. DOI: 10.2774.EDU2023.2.259655. Disponível em: https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/259655. Acesso em: 1 oct. 2026.