Gasim, Muhd. Barzani, Mohd. Ekhwan Toriman, Amal Barggig, Soaad Mutfah, Norsyuhada Hairoma, and Azizah Endut. 2017. “The Evaluation of Heavy Metals Concentrations in Cempaka Lake, Bangi, Selangor, Malaysia”. International Journal on Advanced Science, Engineering and Information Technology 7 (2):453-59. https://doi.org/10.18517/ijaseit.7.2.1004.