Sukkaew, Piyaman, and Sitthipon Art-in. 2019. “The Development of Grade 8 Students’ English Reading Comprehension and Critical Thinking Abilities Using the Open Approach With Cooperative Integrated Reading and Composition Technique”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences 7 (1):121-30. https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/189953.