Zielonka, J. (1970). Democracy in Central and Eastern Europe: The State of the Art.
Lua i Stíl Chicago (17ú heag.)Zielonka, J. Democracy in Central and Eastern Europe: The State of the Art. 1970.
Lua MLA (9ú heag.)Zielonka, J. Democracy in Central and Eastern Europe: The State of the Art. 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.