Rosli, Mohd Arif, et al. “The Effectiveness of Peat-AC Composite Adsorbent in Removing SS, Colour and Fe from Landfill Leachate”. International Journal of Integrated Engineering, vol. 9, no. 3, Sept. 2017, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/1600.