Sinaga, E.K. , Silalahi, N.N. and Eppang, B.M. 2025. Sustainable tour operator practices: A case study of PT Destination Asia. International Journal of Applied Sciences in Tourism and Events. 9, 1 (Jun. 2025), 41–55. DOI:https://doi.org/10.31940/ijaste.v9i1.41-55.