APA (7th ed.) Citation

Casey, W. J. (1989). The secret war against Hitler. Simon & Schuster.

Chicago Style (17th ed.) Citation

Casey, William J. The Secret War Against Hitler. London: Simon & Schuster, 1989.

MLA (9th ed.) Citation

Casey, William J. The Secret War Against Hitler. Simon & Schuster, 1989.

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