Ulfa, Ulia, Sumijan, and Gunadi Widi Nurcahyo. “Peramalan Penjualan Pupuk Menggunakan Metode Trend Moment”. Jurnal Informatika Ekonomi Bisnis 1, no. 4 (December 31, 2019): 8-14. Accessed April 27, 2024. https://infeb.org/index.php/infeb/article/view/4.