Patterson, T. E. (1997). The American democracy (3rd ed., election ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)Patterson, Thomas E. The American Democracy. 3rd ed., election ed. New York: McGraw-Hill, 1997.
Cita MLA (8a ed.)Patterson, Thomas E. The American Democracy. 3rd ed., election ed. McGraw-Hill, 1997.
Precaución: Estas citas no son 100% exactas.