Tanzil, Alferedo, Randy Aldany Barasa, Yonata Laia, and Jepri Banjarnahor. “Analysis of Method C5.0 in Triggering Factors The Number of Covid-19 Increases or Decreases After Getting the Vaccine”. Jurnal Sistem Informasi dan Ilmu Komputer 6, no. 2 (February 8, 2023): 35–37. Accessed October 12, 2025. http://jurnal.unprimdn.ac.id/index.php/jusikom/article/view/3410.