Tahara, A. and Irvan, I. (2026) “Application of Data Mining in Predicting Demand for Blood Bags Based on Blood Type Using the Single Moving Average Method (SMA): Case Study: PMI UDD, Langkat Regency”, Hanif Journal of Information Systems , 3(1), pp. 54–60. doi: 10.56211/hanif.v3i1.54.