Chonthanudomlap, P., and S. . Suphirak. “Administrators’ Competencies Affecting the Effectiveness of Academic Administration in Schools under The Secondary Educational Service Area Office Nakhon Sawan”. Education journal Faculty of Education, Nakhon Sawan Rajabhat University, vol. 8, no. 4, Dec. 2025, pp. 37-50, doi:10.2774.EDU2025.4.281155.