K, J., K. M. Abraham, S. Nandakumar, and M. S. Kumar. “SCREENING OF INDICATOR MICROBES, A STRATEGY FOR POLLUTION ASSESSMENT OF KILLIYAR, A RIVULET OF KARAMANA RIVER, THIRUVANANTHAPURAM, KERALA”. Journal of Advanced Scientific Research, Vol. 11, no. 3 Sup 7, Nov. 2022, pp. 203-6, https://sciensage.info/index.php/JASR/article/view/1859.