APA aipamena

(2010). U.S.A. History in Brief. USA: Bureau of International Information Programs.

Chicago Style aipamena

U.S.A. History in Brief. USA: Bureau of International Information Programs, 2010.

MLA aipamena

U.S.A. History in Brief. USA: Bureau of International Information Programs, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.