APA-ийн эшлэл(7 дахь хэвлэлт)

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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Hariningsih, Hariningsih, Sumpena Sumpena, ба Heribertus Sukarjo. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Hariningsih, Hariningsih, et al. The Effectivity of Used-oil as Quenching Medium of 42-CrMo4 Steel for Automotive Materials. Universitas Muhammadiyah Surakarta, 2020.