Seeno, Monruedee, Pongsak Ruamchomrat, and Mitparnee Pumklom. 2023. “The Characteristics of Professional Administrators as Opinion by Teachers in Schools for the Deaf in Group 1 of Special Education Bureau”. Mahachula Academic Journal 10 (2). Bangkok, Thailand:171-84. https://so04.tci-thaijo.org/index.php/JMA/article/view/260709.