ต่างโอฐ เ. “Logical Thinking Ability of Grade 10 Students Through Sudoku Game”. Journal of Education Khon Kaen University (Graduate Studies Research), vol. 11, no. 3, May 2018, pp. 87-96, https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/124309.