Tamsat, A., S. Wongwanich, and D. Traiwichitkhun. “Confirmatory factor analysis : Collaborative learning scale for nursing students”. Thai Journal of Cardio-Thoracic Nursing, vol. 31, no. 2, Feb. 2021, pp. 142-59, https://he02.tci-thaijo.org/index.php/journalthaicvtnurse/article/view/241064.