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 Prima(JUSIKOM PRIMA) 6, no. 2 (February 8, 2023): 35-37. Accessed May 13, 2024. http://jurnal.unprimdn.ac.id/index.php/JUSIKOM/article/view/3410.