APA (7th ed.) Zitazioa
Schmidt, S. W., & Shelley,Mack G. (2001). American Government and politics today (2001-2002.). Wadsworth.
Chicago Style (17th ed.) Zitazioa
Schmidt, Steffen W., eta Shelley,Mack G. American Government and Politics Today. 2001-2002. Canada: Wadsworth, 2001.
MLA (9th ed.) Zitazioa
Schmidt, Steffen W., eta Shelley,Mack G. American Government and Politics Today. 2001-2002. Wadsworth, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.