APA (7th ed.) Zitazioa

Cosens. The Columbia River Treaty Revisited. Oregon State University Press.

Chicago Style (17th ed.) Zitazioa

Cosens. The Columbia River Treaty Revisited. Oregon State University Press.

MLA (9th ed.) Zitazioa

Cosens. The Columbia River Treaty Revisited. Oregon State University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.