Sujiva, S., Thanaboonpuang, P., Laosum, T., Ingchatcharoen, S., Simpol, W. and Prathumthai, A. (2020) “Cognitive skills of secondary school students: A tentative model and an online test”, Kasetsart Journal of Social Sciences, 41(3), pp. 598–603. available at: https://so04.tci-thaijo.org/index.php/kjss/article/view/247653 (accessed: 17 September 2026).