Rivaldi, Rivaldi. “PROTOTYPE OF AIR PURIFIER TO REDUCE AIR CONTAMINANTS AND ELIMINATE INSECTS BASED ON ESP32 AT UNIVERSITAS HARAPAN MEDAN”. Jurnal Sistem Informasi dan Ilmu Komputer Prima(JUSIKOM PRIMA) 6, no. 1 (September 8, 2022): 82-86. Accessed May 19, 2024. http://jurnal.unprimdn.ac.id/index.php/JUSIKOM/article/view/2819.