Budi, Yusuf Effri Prastyo, and Tedjo Sukmono. “Effectiveness of CAD-CAM Application for the Development Design and Implementation of Maintenance Tools”. Jurnal Penelitian Pendidikan IPA, vol. 9, no. 9, Sept. 2023, pp. 671-80, doi:10.29303/jppipa.v9i9.4859.