Sopithikul, T., K. Sintoovongse, S. Loipha, and S. Subhadhira. “The development of the cooperative-based instruction (CBI) model for the higher education social science courese(Thai)”. Asia-Pacific Journal of Science and Technology, vol. 10, no. 2, Apr. 2017, pp. 151-62, https://so01.tci-thaijo.org/index.php/APST/article/view/84020.