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