Perwira, Y., A. Sitohang, M. Pandjaitan, and K. Simamora. “Application of the Classification Decision Tree Method to Determine Student Satisfaction Factors for Student Services”. Jurnal Info Sains : Informatika Dan Sains, vol. 13, no. 02, Aug. 2023, pp. 87-93, https://ejournal.seaninstitute.or.id/index.php/InfoSains/article/view/2716.