Chiangtha, Rungroethai, and Chonmanee Silanookit. “Characteristics of Professional Administrator in School Administration Under Samutprakan Primary Educational Service Area Office 1”. Legal State Journal 2, no. 1 (February 8, 2024): 48–59. accessed June 13, 2025. https://so19.tci-thaijo.org/index.php/LSJ/article/view/310.