APA (7th ed.) Citation

O'Brien, D. M. (2011). Constitutional law and politics (8th ed.). W.W. Norton.

Chicago Style (17th ed.) Citation

O'Brien, David M. Constitutional Law and Politics. 8th ed. New York: W.W. Norton, 2011.

MLA (9th ed.) Citation

O'Brien, David M. Constitutional Law and Politics. 8th ed. W.W. Norton, 2011.