APA (7th ed.) Zitazioa
Asawa G.L. (2017). Irrigation and water resources engineering. New Age International.
Chicago Style (17th ed.) Zitazioa
Asawa G.L. Irrigation and Water Resources Engineering. Kolkata: New Age International, 2017.
MLA (9th ed.) Zitazioa
Asawa G.L. Irrigation and Water Resources Engineering. New Age International, 2017.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.