Cita APA (7th ed.)

O'Connor, K., & Sabato, L. (1999). American government: Continuity and change (1999 ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

O'Connor, Karen, i Larry Sabato. American Government: Continuity and Change. 1999 ed. Boston: Allyn and Bacon, 1999.

Cita MLA (9th ed.)

O'Connor, Karen, i Larry Sabato. American Government: Continuity and Change. 1999 ed. Allyn and Bacon, 1999.