APA (7th ed.) Zitazioa
Strength of materials / Rao, D.S.P: University Press.
Chicago Style (17th ed.) Zitazioa
Strength of Materials / Rao, D.S.P: University Press.
MLA (9th ed.) Zitazioa
Strength of Materials / Rao, D.S.P: University Press.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.