JUNAIDI, J.; ASWAN RITONGA, D. KEKERASAN MATERIAL BAJA KARBON RENDAH DENGAN METODE ROCKWELL. Jurnal Simetri Rekayasa, [S. l.], v. 1, n. 2, p. 94–100, 2019. Disponível em: https://jurnal.harapan.ac.id/index.php/JSR/article/view/738. Acesso em: 11 jul. 2025.