APA (7th ed.) Zitazioa
Seifu Kebede. Groundwater in Ethiopia: Features, Numbers and Opportunities. Springer.
Chicago Style (17th ed.) Zitazioa
Seifu Kebede. Groundwater in Ethiopia: Features, Numbers and Opportunities. Berlín, Alemania: Springer.
MLA (9th ed.) Zitazioa
Seifu Kebede. Groundwater in Ethiopia: Features, Numbers and Opportunities. Springer.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.