“Alat Pengukur Kualitas Udara sederhana dalam ruangan belajar di kampus ITS NU Kalimantan menggunakan sensor DHT11 dan sensor MQ-2”, J. Inf. Technol. Internet Things, vol. 1, no. 1, pp. 19–24, Jan. 2024, Accessed: Nov. 15, 2026. Available: https://journal.itsnuka.ac.id/index.php/JITUH/article/view/6