เทพตั้ง ป., นนทภา ด. and นนทภา ด. (2018) “Study Problem Solving Mathematical Skill According Concept Mayer of Matayomsuksa 3 Students”, Pathumthani University Academic Journal, 10(1), pp. 258–265. Available at: https://so05.tci-thaijo.org/index.php/ptujournal/article/view/181659 (Accessed: 29 April 2024).