Christie, Geovani, Djoni Hatidja, and Rinancy Tumilaar. 2022. “Application of the SARIMA Method in the Step Function Intervention to Predict the Number of Visitors at Londa Tourism Object”. Jurnal Ilmiah Sains 22 (2):96-103. https://doi.org/10.35799/jis.v22i2.40961.