APA (7th ed.) Citation

Turner, V. W., & Draper, T. (2003). The Roots of American Communism.

Chicago Style (17th ed.) Citation

Turner, Victor W., and Theodore Draper. The Roots of American Communism. 2003.

MLA (9th ed.) Citation

Turner, Victor W., and Theodore Draper. The Roots of American Communism. 2003.