Le Anh, Phuong Bui, and Tzu-Ling Chen. “Visitor Awareness of World Heritage Emblem in Developing Countries”. Journal On Tourism & Sustainability 4, no. 1 (December 1, 2020): 56–70. Accessed May 5, 2024. https://ontourism.academy/journal/index.php/jots/article/view/91.