Sripanwong, S. ., C. . Kongrat, and J. . Weluwan. “The Development of Analytical Thinking Ability of Matthayomsuksa 1 Students Using Phenomenon-Based Learning (PhBL)”. Journal of Graduate Research, vol. 14, no. 1, June 2023, pp. 51-66, https://so02.tci-thaijo.org/index.php/banditvijai/article/view/259497.