Rizqullah, R., Slamet, A., Brillyantina, S. and Wulandari, S. 2025. Application Of Demand Forecasting To Determine The Need For Purple Sweet Potatoes In The Stik Telo Ungu. Jurnal Fokus Manajemen. 5, 4 (Oct. 2025), 697-708. DOI:https://doi.org/10.37676/jfm.v5i4.9486.