Cita APA (7a ed.)

Coyle, D. C. (1954). The United States Political System and How it Works. The New American library.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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