Rivaldi, R. (2022) “PROTOTYPE OF AIR PURIFIER TO REDUCE AIR CONTAMINANTS AND ELIMINATE INSECTS BASED ON ESP32 AT UNIVERSITAS HARAPAN MEDAN”, Jurnal Sistem Informasi dan Ilmu Komputer, 6(1), pp. 82-86. doi: 10.34012/jurnalsisteminformasidanilmukomputer.v6i1.2819.