Katz, R. S., & Crotty, W. J. (2006). Handbook of party politics. Sage.
Lua i Stíl Chicago (17ú heag.)Katz, Richard S., agus William J. Crotty. Handbook of Party Politics. Londo: Sage, 2006.
Lua MLA (9ú heag.)Katz, Richard S., agus William J. Crotty. Handbook of Party Politics. Sage, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.