Hariningsih, H., Sumpena, S., & Sukarjo, H. (2020). The effectivity of used-oil as quenching medium of 42-CrMo4 steel for automotive materials. Universitas Muhammadiyah Surakarta.
Chicago-referens (17:e uppl.)Hariningsih, Hariningsih, Sumpena Sumpena, och Heribertus Sukarjo. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.
MLA-referens (9:e uppl.)Hariningsih, Hariningsih, et al. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.