Gazi , Suhana Binti Mohd, et al. “Performance and Operational Efficiency Study of a Portable Sambal-Making Machine Based on an Electric Heating System to Improve Small-Scale Food Production Productivity”. Proceeding Economy of Asia International Conference, vol. 2025, no. 1, Jan. 2026, pp. 816-20, https://conference.asia.ac.id/index.php/ecosia/article/view/156.