Erizon, Nelvi, M Ardiyansyah, Jasman Jasman, and Yufrizal A. “Effect of Cooling Media on Steel Hardness ST 37 On Conventional Lathe Process”. Teknomekanik 1, no. 1 (June 10, 2018): 6-11. Accessed April 29, 2024. http://teknomekanik.ppj.unp.ac.id/index.php/teknomekanik/article/view/3.