YN Rohmat, T Endramawan, E Haris, I Basori, FB Susetyo, and Dyah Ningjuang Ilmihaqie. “ANALISA PROSES CARBURIZING BAJA AISI 4140 TERHADAP SIFAT MEKANIK DAN MIKROSTRUKTUR”. Prosiding Seminar Nasional Terapan Riset Inovatif (SENTRINOV), vol. 8, no. 1, Jan. 2023, pp. 319 -26, https://proceeding.isas.or.id/index.php/sentrinov/article/view/1178.