Le Tan, T., N. C. Tuong, P. H. . Nguyet, L. M. . Man, H. T. L. . Nhi, and N. T. . Van. “Factors Affecting the Implementation of Green Tourism in Da Nang City”. International Journal of Community Service & Engagement, vol. 2, no. 4, Nov. 2021, pp. 157-7, doi:10.47747/ijcse.v2i4.439.