APA aipamena

(2009). U.S.: A narrative history. Boston: McGraw-Hill.

Chicago Style aipamena

U.S.: A Narrative History. Boston: McGraw-Hill, 2009.

MLA aipamena

U.S.: A Narrative History. Boston: McGraw-Hill, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.