Sukajaya, Nyoman, et al. “Intelligent Classification of Learner’s Cognitive Domain Using Bayes Net, Naïve Bayes, and J48 Utilizing Bloom’s Taxonomy-Based Serious Game”. International Journal of Emerging Technologies in Learning (iJET), vol. 10, no. 2, Mar. 2015, pp. pp. 46-52, doi:10.3991/ijet.v10i2.4451.