WASET
    Pennapa Palapin,  Guidelines for the Management and Sustainability Development of Forest Tourism Kamchanoad Baan Dung, Udon Thani.   journal   = {International Journal of Psychological and Behavioral Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 99(3). 982 - 985
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10001018.