Kongkasai, Kanthika, Choomsak Intarak, and Rhoamrumpha Natthunatiruj. “Development of Promoting Morale Model in Teacher Performance Under the Secondary Educational Service Area Office Ratchaburi”. Journal of Graduate MCU KhonKaen Campus 12, no. 1 (March 29, 2025): 179–191. accessed September 29, 2026. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/273585.