(2004). Annual editions: American government 2003/2004. Guilford: McGraw-Hill/Dushkin.
Chicago Style aipamenaAnnual Editions: American Government 2003/2004. Guilford: McGraw-Hill/Dushkin, 2004.
MLA aipamenaAnnual Editions: American Government 2003/2004. Guilford: McGraw-Hill/Dushkin, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.