KHAMPEERA, Anan, Chao YONGCHALERMCHAI, and Kuaanan TECHATO. 2017. “Drought Monitoring Using Drought Indices and GIS Techniques in Kuan Kreng Peat Swamp, Southern Thailand”. Walailak Journal of Science and Technology (WJST) 15 (5):357-70. https://doi.org/10.48048/wjst.2018.2723.