APA (7th ed.) Zitazioa

Campbell, J. E. a. G. (2000). Before the vote: Forecasting American national elections. SAGE Publications, Inc..

Chicago Style (17th ed.) Zitazioa

Campbell, James E. and Garand. Before the Vote: Forecasting American National Elections. Thousand Oaks, California: SAGE Publications, Inc., 2000.

MLA (9th ed.) Zitazioa

Campbell, James E. and Garand. Before the Vote: Forecasting American National Elections. SAGE Publications, Inc., 2000.