แข็งแอ ค. The Guidelines of Participatory Administration Development for School Administrators under The Office of Nongbualamphu Educational Service Area 1. rpujournal [internet]. 2019 Dec. 31 [cited 2026 Oct. 3];5(supplement):181-95. available from: https://so03.tci-thaijo.org/index.php/rpu/article/view/231915