WASET
    Aeslina Abdul Kadir and  Abbas Mohajerani,  Possible Utilization of Cigarette Butts in Light- Weight Fired Clay Bricks.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2008, vol. 21(9). 137 - 141
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/300.