ARIFIN, yahya alhafiizh.
 Analysis of Production Process Time Based on The Level of Hardness in The Production Material.
<strong>METALOGRAM</strong>, [S.l.], p. 11-14, apr. 2025.
ISSN 3090-2460.
Available at: &lt;<a href="https://www.journal.unrika.ac.id/index.php/metalogram/article/view/7445" target="_new">https://www.journal.unrika.ac.id/index.php/metalogram/article/view/7445</a>&gt;. Date accessed: 14 feb. 2026.
doi: <a href="https://doi.org/10.33373/mtlg.v2i1.7445">https://doi.org/10.33373/mtlg.v2i1.7445</a>.