Cita APA (7a ed.)

Geer, J. G. (2006). In defense of negativity: Attack ads in presidential campaigns. University of Chicago Press.

Cita Chicago Style (17a ed.)

Geer, John Gray. In Defense of Negativity: Attack Ads in Presidential Campaigns. Chicago: University of Chicago Press, 2006.

Cita MLA (9a ed.)

Geer, John Gray. In Defense of Negativity: Attack Ads in Presidential Campaigns. University of Chicago Press, 2006.