Klinnoi, Y., and K. Sklalaiy. “PROFESSIONAL LEADERSHIP OF SCHOOL ADMINISTRATORS IN PHETCHABURI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1”. Academic Journal Phranakhon Rajabhat University, vol. 14, no. 2, Dec. 2023, pp. 44-58, https://so01.tci-thaijo.org/index.php/AJPU/article/view/266434.