Siriseang, Oraphat. “Development of Supplementary Reading Books on Locality of Yasothon Learning Area of Thai Language Department Prathomsuksa 6”. Mahachula Academic Journal 8, no. 2 (August 28, 2021): 325–340. Accessed April 28, 2024. https://so04.tci-thaijo.org/index.php/JMA/article/view/252552.