APA (7th ed.) Citation

Clark, T. D. (1959). Frontier America: The story of the westward movement. Scribner.

Chicago Style (17th ed.) Citation

Clark, Thomas D. Frontier America: The Story of the Westward Movement. New York: Scribner, 1959.

MLA (8th ed.) Citation

Clark, Thomas D. Frontier America: The Story of the Westward Movement. Scribner, 1959.

Warning: These citations may not always be 100% accurate.