APA (7th ed.) Zitazioa
Asawa, G. (2014). Elementary irrigation engineering. New Age International.
Chicago Style (17th ed.) Zitazioa
Asawa, G.L. Elementary Irrigation Engineering. Kolkata: New Age International, 2014.
MLA (9th ed.) Zitazioa
Asawa, G.L. Elementary Irrigation Engineering. New Age International, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.