Abramowitz, A. (2010). The disappearing center: Engaged citizens, polarization, and American democracy. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Abramowitz, Alan. The Disappearing Center: Engaged Citizens, Polarization, and American Democracy. New Haven: Yale University Press, 2010.
Lua MLA (9ú heag.)Abramowitz, Alan. The Disappearing Center: Engaged Citizens, Polarization, and American Democracy. Yale University Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.