ป้องพาล ป. , ยุภาศ ย. and โพธิ์สิงห์ ภ. 2020. Strategies for Regulating Tourism Management Promotion Policies for the Rafting Groups in the Northeastern. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University. 15, 2 (Aug. 2020), 97–111.