Citazione Stile APA (7a Edizione)

Coyle, D. C. (1954). The United States political system and how it works. New American Library.

Citazione stile Chigago Style (17a edizione)

Coyle, David Cushman. The United States Political System and How It Works. Nueva York: New American Library, 1954.

Citatione MLA (9a ed.)

Coyle, David Cushman. The United States Political System and How It Works. New American Library, 1954.