APA (7th ed.) Citation

Churchill, R. S., & Gilbert, M. (1966). Winston S. Churchill. Heinemann.

Chicago Style (17th ed.) Citation

Churchill, Randolph S., and Martin Gilbert. Winston S. Churchill. London: Heinemann, 1966.

MLA (8th ed.) Citation

Churchill, Randolph S., and Martin Gilbert. Winston S. Churchill. Heinemann, 1966.