แก้วกิ่ง ช, แก้วมงคล ท. Innovative Leadership of School Administrators in Education Sandbox under the Office of Rayong Primary Educational Service Area 1. BMV. 2026;3(3-2):114-134. Accessed July 29, 2026. https://benjamit.thonburi-u.ac.th/ojs/index.php/bmv16/article/view/512