Ramadhani, Adelia, Sri Wahyuningsih, and Meiliyani Siringoringo. “Forecasting the Number of Foreign Tourist Visits to Indonesia Used Intervention Analysis With Step Function”. Jurnal Matematika, Statistika dan Komputasi 19, no. 1 (September 7, 2022): 146-162. Accessed July 9, 2025. http://54.254.27.92/index.php/jmsk/article/view/21607.