APA (7th ed.) Zitazioa
Ubhi, B. Theroy of Machines (3rd ed.). S.D. Kataria & Sons.
Chicago Style (17th ed.) Zitazioa
Ubhi, B.S. Theroy of Machines. 3rd ed. New Delhi: S.D. Kataria & Sons.
MLA (9th ed.) Zitazioa
Ubhi, B.S. Theroy of Machines. 3rd ed. S.D. Kataria & Sons.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.