WASET
    A. Mohammed and  A. Babatunde,  Understanding Integrated Removal of Heavy Metals, Organic Matter and Nitrogen in a Constructed Wetland System Receiving Simulated Landfill Leachate.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2017, vol. 124(4). 303 - 309
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/10006810.