Soeleman, S., and J. Jumadi. “PERANCANGAN COMPOUND DIES UNTUK PROSES BLANKING DAN PIERCING CYLINDER HEAD GASKET TIPE TVS - N54”. SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin, vol. 1, no. 2, Dec. 2007, https://jurnal.umj.ac.id/index.php/sintek/article/view/81.