Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.