Rini G, Sidharta T. The Effect of Operational Costs and Production Costs on Profitability at PT. Ultrajaya Milk Industry & Trading Company Tbk. j.emak, j.emak [Internet]. 2025 Jul. 22 [cited 2026 Jun. 4];6(3):24. Available from: https://penerbitadm.pubmedia.id/index.php/jurnalemak/article/view/2790