WASET
    K. Praraththajariya,  The Design of English Materials to communication the Identity of Amphawa District, Samut Songkram Province, for Sustainable Tourism.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2013, vol. 77(5). 1277 - 1280
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/13676.