APA (7th ed.) Citation

Van Loon, H. W. (1942). The story of America. Citadel Press.

Chicago Style (17th ed.) Citation

Van Loon, Hendrik Willem. The Story of America. New York: Citadel Press, 1942.

MLA (9th ed.) Citation

Van Loon, Hendrik Willem. The Story of America. Citadel Press, 1942.