Harahap, Lokot Muda, Enjelia Manik, Delvi Dede Amalia, Mulyati Patresia Sinaga, Rona Panjaitan, Sarah Fadhila Ardini, and Siat Putri Kabeakan. “Optimizing Production Amounts to Obtain Maximum Profits from Sales of Basreng and Duosus "Shafa Snack" In Medan City”. Economic: Journal Economic and Business 3, no. 2 (April 30, 2024): 64–68. Accessed July 5, 2025. https://jurnal.larisma.or.id/index.php/EJEB/article/view/595.