O'Connor, K., & Sabato, L. (1993). American government: Roots and reform (Special pre-election preview ed., Special preview ed.). Macmillan Maxwell Macmillan Canada.
Citazione stile Chigago Style (17a edizione)O'Connor, Karen, e Larry Sabato. American Government: Roots and Reform. Special pre-election preview ed., Special preview ed. New York, Toronto: Macmillan Maxwell Macmillan Canada, 1993.
Citatione MLA (9a ed.)O'Connor, Karen, e Larry Sabato. American Government: Roots and Reform. Special pre-election preview ed., Special preview ed. Macmillan Maxwell Macmillan Canada, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.