APA aipamena

(2005). Freshwater ecoregions: A conservation assessment. Washington: Island Press.

Chicago Style aipamena

Freshwater Ecoregions: A Conservation Assessment. Washington: Island Press, 2005.

MLA aipamena

Freshwater Ecoregions: A Conservation Assessment. Washington: Island Press, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.