APA (7th ed.) Zitazioa
Hacker, A. (1983). U-S: A Statical Portrait of the American People.
Chicago Style (17th ed.) Zitazioa
Hacker, Andrew. U-S: A Statical Portrait of the American People. 1983.
MLA (9th ed.) Zitazioa
Hacker, Andrew. U-S: A Statical Portrait of the American People. 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.