WASET
    Widi Astuti and  Agus Prasetya and  Endang Tri Wahyuni and  I Made Bendiyasa,  The Effect of Unburned Carbon on Coal Fly Ash toward its Adsorption Capacity for Methyl Violet.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 418 - 421
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/5066.