Herman, Timotius, and Achmad Ghazali. “Optimizing Service Quality Through a People, Process, and Technology Approach for Freelance Tour Guides (Case Study of Timotravel)”. International Journal of Science and Environment (IJSE) 5, no. 4 (November 22, 2025): 253–257. Accessed November 25, 2025. https://ijsenet.com/index.php/IJSE/article/view/270.