thongsawang, niphaphan, and Omthajit Pansri. 2022. “The Development Reading Comprehension Achievement of Matthayomsuksa 1 students By Skill Practice with the 9 Question Technique”. Journal of Modern Learning Development 7 (7):281-96. https://so06.tci-thaijo.org/index.php/jomld/article/view/255784.