APA (7th ed.) Citation

Groom, W. (2018). The allies: Roosevelt, Churchill, Stalin, and the unlikely alliance that won World War II. National Geographic.

Chicago Style (17th ed.) Citation

Groom, Winston. The Allies: Roosevelt, Churchill, Stalin, and the Unlikely Alliance That Won World War II. Washington, D.C.: National Geographic, 2018.

MLA (8th ed.) Citation

Groom, Winston. The Allies: Roosevelt, Churchill, Stalin, and the Unlikely Alliance That Won World War II. National Geographic, 2018.

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