Putu Jenny Natasia, and Putu Yudi Setiawan. “Optimization Of Production Combination in Umah Lokal Coffee Roastery”. International Journal of Economics, Management and Accounting 2, no. 2 (April 8, 2025): 340–350. Accessed December 5, 2025. https://international.areai.or.id/index.php/IJEMA/article/view/637.