Soeleman, Soeleman, and Jumadi Jumadi. 2007. “PERANCANGAN COMPOUND DIES UNTUK PROSES BLANKING DAN PIERCING CYLINDER HEAD GASKET TIPE TVS - N54”. SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin 1 (2). https://jurnal.umj.ac.id/index.php/sintek/article/view/81.