Schaffner. Campaign Finance and Political Polarization. University of Michigan Press.
Lua i Stíl Chicago (17ú heag.)Schaffner. Campaign Finance and Political Polarization. University of Michigan Press.
Lua MLA (9ú heag.)Schaffner. Campaign Finance and Political Polarization. University of Michigan Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.