Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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