APA (7th ed.) Zitazioa
Asawa, G. L. (1996). Irrigation engineering (2nd ed.). New Age International.
Chicago Style (17th ed.) Zitazioa
Asawa, G. L. Irrigation Engineering. 2nd ed. Calcutta: New Age International, 1996.
MLA (9th ed.) Zitazioa
Asawa, G. L. Irrigation Engineering. 2nd ed. New Age International, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.