Khairul Amri Kamarudin, Mohd, et al. “Classification of Sedimentation Problems Level Using Environmetric Method at Terengganu River, Malaysia”. International Journal of Engineering & Technology, vol. 7, no. 3.14, July 2018, pp. 327-32, https://doi.org/10.14419/ijet.v7i3.14.18812.