Παραπομπή APA

Held, D. (2006). Models of democracy (3rd ed.). Polity Press.

Παραπομπή Chicago Style

Held, David. Models of Democracy. 3rd ed. U. K.: Polity Press, 2006.

Παραπομπή MLA

Held, David. Models of Democracy. 3rd ed. Polity Press, 2006.