M. S. Hossain, M. N. Hussain, T. Ahmed, N. Gain, and M. A. Islam, “The Role of Travel Agencies and Tour Operators in the Development of the Tourism Sector: An Empirical Study on Bangladesh”, Am. J. Tourism Hosp., vol. 3, no. 1, pp. 67–77, May 2025, doi: 10.54536/ajth.v3i1.4587.