WASET
    Patrick B. Cobbinah and  Rosemary Black and  Rik Thwaites,  Tourism Planning in Developing Countries: Review of Concepts and Sustainability Issues.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 76(4). 1034 - 1041
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9997066.