Novendra, Alan, Refdinal Refdinal, and Sai Kham Le. “Hardness Analysis of Stone Breaker Chisel Made of Medium Carbon Steel As a Result of Hardening Using Water Cooling Media”. Teknomekanik 3, no. 1 (May 25, 2020): 22–27. Accessed November 18, 2024. https://teknomekanik.ppj.unp.ac.id/index.php/teknomekanik/article/view/51.