Basrullah, Basrullah, et al. “Simulasi Perancangan Press Tool Cylinder Head Gasket (3X –E 1181–00) Sepeda Motor Yamaha F1ZR”. Jurnal Teknik Mesin, vol. 10, no. 2, July 2019, pp. 9-18, http://ejournal2.pnp.ac.id/index.php/jtm/article/view/180.