Yudistirani, Sri Anastasia, Kisman H Mahmud, and Ery Diniardi. 2018. “ANALISIS KEKERASAN PADA OUTER RING DAN INNER RING HASIL PROSES HEAT TREATMENT”. Jurnal Teknologi 10 (1):83-88. https://doi.org/10.24853/jurtek.10.1.83-88.