“Forecasting Kebutuhan Lubricating Oil Engine Dengan Membandingkan Metode Simple Moving Average Dan Single Exponential Smoothing: (Studi Kasus: Warehouse Site Erka PT. Pamapersada Nusantara)”, JTMIT, vol. 5, no. 2, pp. 905–909, May 2026, doi: 10.55826/jtmit.v5i2.1758.