APA (7th ed.) Citation

DUFFY. (1991). Hitler slept late and other blunders that cost him the war. Praeger Publications.

Chicago Style (17th ed.) Citation

DUFFY. Hitler Slept Late and Other Blunders That Cost Him the War. New York: Praeger Publications, 1991.

MLA (8th ed.) Citation

DUFFY. Hitler Slept Late and Other Blunders That Cost Him the War. Praeger Publications, 1991.

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