APA引文

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

芝加哥风格引文

Held, David. Models of Democracy. 3rd ed. Cambridge, UK: Polity, 2006.

MLA引文

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

警告：这些引文格式不一定是100％准确.