M.A., K., N. M.Y., B. H. A.Y., Y. S.H., and D. M.M.P. “THE PERFORMANCE OF LOW COST CUTTING TOOLS WHEN MACHINING HARDENED STEEL OF 60 HRC”. Journal of Advanced Manufacturing Technology (JAMT), Vol. 6, no. 1, Apr. 2014, https://jamt.utem.edu.my/jamt/article/view/8.