Sarumaha, Demonius. “Penerapan Metode Double Moving Average Untuk Memprediksi Penjualan Tiket Kereta Api ”. Explorer 1, no. 1 (December 9, 2020): 10-13. Accessed October 9, 2026. https://www.journal.fkpt.org/index.php/Explorer/article/view/36.