Gokulanathan, S, P Manivasagam, N Prabu, and T Venkatesh. “GSM Based Water Quality Monitoring System Using Arduino”. Shanlax International Journal of Arts, Science and Humanities 6, no. 4 (April 2, 2019): 22-26. Accessed July 11, 2020. http://www.shanlaxjournals.in/journals/index.php/sijash/article/view/341.