APA引文

O'Brien, D. M. (2003). Constitutional law and politics (5th ed.). New York: Norton.

Trích dẫn kiểu Chicago

O'Brien, David M. Constitutional Law and Politics. 5th ed. New York: Norton, 2003.

MLA引文

O'Brien, David M. Constitutional Law and Politics. 5th ed. New York: Norton, 2003.

警告：这些引文格式不一定是100％准确.