APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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