Purba, Desmi Triyanti, et al. “Optimizing MSME Profitability: The Impact of Production Costs On Operating Profit (Case Study: Cassava Chips MSME at Simpang 3 Sibatu Batu Road)”. Jurnal Ilmiah Accusi, vol. 8, no. 1, May 2026, pp. 274 - 289, https://doi.org/10.36985/jzrdsa94.