Zafar, Rashid, Megat F. Zuhairi, Eiad Yafi, Hassan Dao, and Hilmi M. Salleh. 2018. “Mobile Crowd Sensing Application for Noise Monitoring in Kuala Lumpur”. International Journal of Engineering & Technology 7 (4.29): 196-202. https://doi.org/10.14419/ijet.v7i4.29.21969.