Quang Hai, Truong, and Tran Dang Hieu. “DEVELOPING SUSTAINABLE TOURISM CRITERIA FOR SA PA, LAO CAI: AN INTEGRATED APPROACH BASED ON GLOBAL STANDARDS AND SUSTAINABLE TOURISM INDICATOR SYSTEMS”. HNUE Journal of Science: Journal of Social Sciences, vol. 71, no. 3, June 2026, pp. 99-109, https://doi.org/10.18173/2354-1067.2026-0049.