APA (7th ed.) Zitazioa

Held, D. (1987). Models of democracy. Polity Press.

Chicago Style (17th ed.) Zitazioa

Held, David. Models of Democracy. Oxford: Polity Press, 1987.

MLA (9th ed.) Zitazioa

Held, David. Models of Democracy. Polity Press, 1987.