Utoyo, Andri Pipit, and Sugiyono . Sugiyono. “ANALISIS FORECASTING PERSEDIAAN RAW MATERIAL DAN PENENTUAN SAFETY STOCK DI PT. YZ BOGOR”. Indikator: Jurnal Ilmiah Manajemen Dan Bisnis, vol. 4, no. 1, June 2020, pp. 161-88, doi:10.22441/indikator.2020.v4i1.010.