Devi Astri Nawangnugraeni, M. Zakki Abdillah, and Akrim Teguh Suseno. 2022. “C4.5 Algorithm Implementation For Public Sentyment Analysis Covid-19 Vaccine”. Digital Zone: Jurnal Teknologi Informasi Dan Komunikasi 13 (2), 151-60. https://doi.org/10.31849/digitalzone.v13i2.11658.