APA (7th ed.) Citation

Buchanan, P. J. (2008). Churchill, Hitler, and "the unnecessary war": How Britain lost its empire and the West lost the world. Crown Publishers.

Chicago Style (17th ed.) Citation

Buchanan, Patrick J. Churchill, Hitler, and "the Unnecessary War": How Britain Lost Its Empire and the West Lost the World. New York: Crown Publishers, 2008.

MLA (9th ed.) Citation

Buchanan, Patrick J. Churchill, Hitler, and "the Unnecessary War": How Britain Lost Its Empire and the West Lost the World. Crown Publishers, 2008.

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