APA (7th ed.) Zitazioa
Sahoo, P. (2014). Engineering tribology. PHI Learning.
Chicago Style (17th ed.) Zitazioa
Sahoo, Prasanta. Engineering Tribology. New Delhi: PHI Learning, 2014.
MLA (9th ed.) Zitazioa
Sahoo, Prasanta. Engineering Tribology. PHI Learning, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.