1. School of Community Resources and Development, Arizona State University, Phoenix, AZ, USA
2. Center for Sustainable Tourism, School of Community Resources and Development, Arizona State University, Phoenix, AZ, USA
3. Faculty of Tourism Studies, Vietnam National University of Social Sciences and Humanities, Hanoi, Vietnam
4. Department of Tourism, Vietnam National University of Social Sciences and Humanities, HCMC, Hanoi, Vietnam
5. Tourism Department, Hoa Sen University, Hồ Chí Minh, Vietnam