Sivapan Choo-In and  Chaisri Tharasawatpipat and  Srisuwan Kaseamsawat and  Tatsanawalai Utarasakul,  Seasonal Variations in Surface Water Quality, Samut Songkram Province, Thailand.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 529 - 532
    [viewed 11 August 2020]. Available from: https://publications.waset.org/pdf/16579.