Tanzil, A., R. A. Barasa, Y. Laia, and J. 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, vol. 6, no. 2, Feb. 2023, pp. 35-37, doi:10.34012/jurnalsisteminformasidanilmukomputer.v6i2.3410.