Wati, Erna Kusuma, Fitria Hidayanti, and Novi Azman. “DESIGN OF THE POLLUTION GAS CARBON MONOXIDE (CO) MONITORING SYSTEM BASED ON MICROCONTROLLER”. Spektra: Jurnal Fisika dan Aplikasinya 5, no. 1 (April 30, 2020): 1 - 10. Accessed July 24, 2024. https://journal.unj.ac.id/unj/index.php/spektra/article/view/14779.