Srikoon, S., and S. Tippala. “Effects of Open-Approach Integrated With Cognitive Training Learning Activity for Enhancing Analytical Thinking of Matthayomsuksa 3 Students, Wang Nue Wittaya School, Lampang Province”. Trends of Humanities and Social Sciences Research, vol. 10, no. 1, Mar. 2022, pp. 61-85, https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/254285.