Sinthusing, A., S. Ingart, and S. Insa-ard. “The Effects of Using Problem-Based Constructivist Infographic Printed Media on the Enhancement of the Problem-Solving Skills of Matthayom SueksaThree Students”. ECT Education and Communication Technology Journal, vol. 17, no. 22, June 2022, pp. 17-31, https://so01.tci-thaijo.org/index.php/ectstou/article/view/249828.