APA (7th ed.) Zitazioa

Joel H., S. (2000). American Education (9th Edn.). McGraw Hill.

Chicago Style (17th ed.) Zitazioa

Joel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.

MLA (9th ed.) Zitazioa

Joel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.