Cita APA (7a ed.)

Aldrich, J. H. (1995). Why parties?: The origin and transformation of political parties in America. University of Chicago Press.

Cita Chicago Style (17a ed.)

Aldrich, John H. Why Parties?: The Origin and Transformation of Political Parties in America. Chicago: University of Chicago Press, 1995.

Cita MLA (8a ed.)

Aldrich, John H. Why Parties?: The Origin and Transformation of Political Parties in America. University of Chicago Press, 1995.