Ritmontree, Pimpitcha, and Chonmanee Silanookit. “Happy Workplace of Schools Under the Bangkok Primary Educational Service Area Office”. City State Journal 1, no. 1 (March 3, 2024): 35–46. accessed May 5, 2025. https://so16.tci-thaijo.org/index.php/CS_J/article/view/273.