Nurain Binti Ma’arof, and Johan Sohaili. “The Water Quality Perspective in Universiti Teknologi Malaysia (UTM) River: A Review”. International Journal of Business and Social Development (IJBSD), Vol. 1, no. 1, Dec. 2019, pp. 15 -24, https://www.ijbsd.jurnalkehidupan.com/index.php/ijbsd/article/view/3.