APA (7th ed.) Zitazioa
Twomey, D. (2016). Irrigation Engineering. Callisto reference.
Chicago Style (17th ed.) Zitazioa
Twomey, Davis. Irrigation Engineering. New York: Callisto reference, 2016.
MLA (9th ed.) Zitazioa
Twomey, Davis. Irrigation Engineering. Callisto reference, 2016.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.