Surachai, and Kanjana. “Nonghan Ruined City’s Legends: The Cultural Capital for Tourism of Nonghan Basin, Sakon Nakhon Province, Thailand”. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, vol. 5, no. 14, Apr. 2021, pp. 12-17, doi:10.51453/2354-1431/2019/276.