APA (7th ed.) Citation

Churchill. (1950). Their finest hour: Vol. II. Penguin Books.

Chicago Style (17th ed.) Citation

Churchill. Their Finest Hour: Vol. II. New York: Penguin Books, 1950.

MLA (8th ed.) Citation

Churchill. Their Finest Hour: Vol. II. Penguin Books, 1950.

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