Narinto, Phrasamu Narit. “TEACHER DEVELOPMENT FOR QUALITY OF LEARNERS IN THE 21st CENTURY”. Journal of Graduate MCU KhonKaen Campus 6, no. 3 (September 30, 2019): 459–473. accessed September 12, 2026. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/215589.