(2002). Agriculture, hydrology and water quality. CABI.
Chicago Style (17th ed.) ZitazioaAgriculture, Hydrology and Water Quality. New York: CABI, 2002.
MLA (9th ed.) ZitazioaAgriculture, Hydrology and Water Quality. CABI, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.