Bian Cheng Xiang and  Wang Qian,  Research on the Protection and Development of Ancient Town Cultural Landscape Based on "Four State" Elements: Illustrated by the Example of Qikou.   journal   = {International Journal of Social and Business Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2023, vol. 203(11). 700 - 709
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013332.