Sari, I., and B. Endrawati. “Perbandingan Penjualan Ekspor Dan Domestik Batubara Di PT X Dengan Metode Time Series”. Proceedings of the National Conference on Electrical Engineering, Informatics, Industrial Technology, and Creative Media, Vol. 4, no. 1, Dec. 2024, pp. 481-7, https://centive.ittelkom-pwt.ac.id/index.php/centive/article/view/458.