Tangel, Dirga, Stenly Tangkuman, and Hengky Luntungan. “APLIKASI SPREADSHEET PADA PERANCANGAN RODA GIGI LURUS”. Jurnal Poros Teknik Mesin UNSRAT 5, no. 2 (October 25, 2016). Accessed March 4, 2026. https://ejournal.unsrat.ac.id/v3/index.php/poros/article/view/13786.