APA (7th ed.) Citation

O'Connor, K., Sabato, L., & Yanus, A. B. (2011). American government: Roots and reform (2011 alternate ed.). Pearson Longman.

Chicago Style (17th ed.) Citation

O'Connor, Karen, Larry Sabato, and Alixandra B. Yanus. American Government: Roots and Reform. 2011 alternate ed. New York: Pearson Longman, 2011.

MLA (9th ed.) Citation

O'Connor, Karen, et al. American Government: Roots and Reform. 2011 alternate ed. Pearson Longman, 2011.