Feby Indayani,  Mulyana, Zumrotul Avifa Kasjib, and Nirmala Dewi. “The Implementation of Project Based Learning Model in CAD/CAM Instruction to Improve Learning Outcomes of Mechanical Engineering Students”. International Journal of Health, Economics, and Social Sciences (IJHESS), Vol. 7, no. 3, July 2025, p. 1331~1343, doi:10.56338/ijhess.v7i3.8231.