Amin, Iqbal, and Yusuf Eko Nurcahyo. “The Design of the Coffee Grinder Machine in Terms of Frame Strength”. TEKNIKA 1, no. 1 (July 20, 2023): 159 - 164. Accessed May 11, 2024. https://jurnal.untag-sby.ac.id/index.php/teknika/article/view/9248.