Pramesthi Utomo, and Aris Fanani. “Peramalan Jumlah Penumpang Kereta Api Di Indonesia Menggunakan Metode Seasonal Autoregressive Integrated Moving Average (SARIMA)”. Jurnal Algebra, Vol. 1, no. 1, Aug. 2020, pp. 169-78, http://jurnalsaintek.uinsby.ac.id/index.php/algebra/article/view/1030.