Ni’am, Abdullah, and Denny Irawan. “Design and Build Noise and CO2 Control Devices in IOT (Internet of Things) Based Libraries”. Jurnal Indonesia Sosial Teknologi 5, no. 6 (June 19, 2024): 2591–2600. Accessed October 18, 2024. https://jist.publikasiindonesia.id/index.php/jist/article/view/1129.