APA (7th ed.) Citation

Churchill, W. (1931). The unknown war: The eastern front. C. Scribner's Sons.

Chicago Style (17th ed.) Citation

Churchill, Winston. The Unknown War: The Eastern Front. New York: C. Scribner's Sons, 1931.

MLA (9th ed.) Citation

Churchill, Winston. The Unknown War: The Eastern Front. C. Scribner's Sons, 1931.