๋JG-MCUKK ๋JG-MCUKK. “ส่วนหน้า”. Journal of Graduate MCU KhonKaen Campus 6, no. 3 (November 23, 2019). Accessed May 18, 2024. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/226532.