Taupikurrahman, T., Irawan, T. ., & Widyastutik, W. (2019). The International Tourism Demand for Indonesia: Expenditure Approach. International Journal of Sciences: Basic and Applied Research (IJSBAR), 48(6), 119–127. Retrieved from https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/10507