WASET
    Sivapan Choo-In,  Zinc Contaminate on Urban Roadside in Rush Hour, Bangkok, Thailand.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2014, vol. 91(7). 489 - 492
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/9998771.