APA (7th ed.) Citation

Koch, H., & Hitler, A. (2003). Hitler gained power by legal means. The rise of Adolf Hitler.

Chicago Style (17th ed.) Citation

Koch, H.W, and Adolf Hitler. "Hitler Gained Power by Legal Means." The Rise of Adolf Hitler 2003.

MLA (8th ed.) Citation

Koch, H.W, and Adolf Hitler. "Hitler Gained Power by Legal Means." The Rise of Adolf Hitler, 2003.

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