Saputra, Nabil Hasabi, et al. “Design of a Drying Machine for Charcoal Bricks to Improve Cost Efficiency in Production and Profitability Using the Quality Function Deployment Method”. JRSI (Jurnal Rekayasa Sistem Dan Industri), vol. 12, no. 02, Dec. 2025, pp. 41-48, https://journals.telkomuniversity.ac.id/jrsi/article/view/10158.