Kiong, T. T., Yunos, J. M., Heong, Y. M., Hj. Hussein, A., & Mohamad, M. M. (2018). Thinking skills for secondary school students in Malaysia. Journal of Research, Policy & Practice of Teachers and Teacher Education, 2(2), 12–23. Retrieved from https://ojs.upsi.edu.my/index.php/JRPPTTE/article/view/153