FEBRI, Calvin Aidil; 						NUHADEK, Ujang.
 The Effect of Spindle Speed Variation on Results of Drilling Process in Radial Arm Drilling Machine RD-1600.
<strong>Journal of Ocean, Mechanical and Aerospace -science and engineering-</strong>, [S.l.], v. 63, n. 2, p. 6-10, june 2020.
ISSN 2527-6085.
Available at: &lt;<a href="https://isomase.org/Journals/index.php/jomase/article/view/199" target="_new">https://isomase.org/Journals/index.php/jomase/article/view/199</a>&gt;. Date accessed: 04 nov. 2025.
doi: <a href="http://dx.doi.org/10.36842/jomase.v63i2.199">http://dx.doi.org/10.36842/jomase.v63i2.199</a>.