L. Hasibuan, S. Musthofa, D. Putri, and M. Jannah, “COMPARISON OF SEASONAL TIME SERIES FORECASTING USING SARIMA AND HOLT WINTER’S EXPONENTIAL SMOOTHING (CASE STUDY: WEST SUMATRA EXPORT DATA)”, BAREKENG: J. Math. & App., vol. 17, no. 3, pp. 1773-1784, Sep. 2023.