A. Ananda Hapsari, A. Iqbal Hajamydeen, and M. I. Irsyad Abdullah, “A Review on Indoor Air Quality Monitoring using IoT at Campus Environment”, IJET, vol. 7, no. 4.22, pp. 55–60, Nov. 2018, doi: 10.14419/ijet.v7i4.22.22191.