Alandra, Cindy Resha, Dony Permana, Dodi Vionanda, and Dina Fitria. 2025. “Forecasting Foreign Tourists to West Sumatera Before and After COVID-19 Using ARIMA and Prophet and Its Impact on Foreign Exchange”. Indonesian Journal of Statistics and Its Applications 9 (2). Bogor, Indonesia:157-68. https://doi.org/10.29244/ijsa.v9i2p157-168.