Chompoo, S., S. Thongchalerm, and G. . Thipatdee. “Development of English Reading Comprehension by Using a KWLH Plus Technique for the Sixth Grader Students”. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, vol. 17, no. 3, Dec. 2022, pp. 99-108, https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/258056.