Hall, C. M., Dallen J. Timothy, & David Timothy Duval. (2009). Safety and security in tourism: Relationships, management and marketing. Jaico publishing house.
Trích dẫn kiểu ChicagoHall, C. Michael, Dallen J. Timothy, và David Timothy Duval. Safety and Security in Tourism: Relationships, Management and Marketing. Delhi: Jaico publishing house, 2009.
Trích dẫn MLAHall, C. Michael, et al. Safety and Security in Tourism: Relationships, Management and Marketing. Jaico publishing house, 2009.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.