Nguyen, T. L., & Pham, T. T. T. (2020). The september 11th terrorist attacks and their impacts on the U.S. travel and tourism.
استشهاد بنمط شيكاغوNguyen, Thi Luyen, و Thi Thanh Thuy Pham. The September 11th Terrorist Attacks and Their Impacts On the U.S. Travel and Tourism. 2020.
MLA استشهادNguyen, Thi Luyen, و Thi Thanh Thuy Pham. The September 11th Terrorist Attacks and Their Impacts On the U.S. Travel and Tourism. 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.