Zimmerman, J. F. (2010). Congress: Facilitator of state action. State University of New York Press.
Lua i Stíl Chicago (17ú heag.)Zimmerman, Joseph Francis. Congress: Facilitator of State Action. Albany: State University of New York Press, 2010.
Lua MLA (9ú heag.)Zimmerman, Joseph Francis. Congress: Facilitator of State Action. State University of New York Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.