“DIAGNOSIS OF CORONAVIRUS DISEASE 2019 (COVID-19) SURVEILLANCE USING C4.5 ALGORITHM: Diagnosis Penyakit Coronavirus 2019 (COVID-19) Surveillance Menggunakan Algoritma C4.5”, pilar, vol. 16, no. 1, hlm. 71–80, Mar 2020, doi: 10.33480/pilar.v16i1.1293.