APA (7th ed.) Citation

Zaloga & Delf. (2007). US field artillery of World War II. Osprey.

Chicago Style (17th ed.) Citation

Zaloga and Delf. US Field Artillery of World War II. Oxford: Osprey, 2007.

MLA (8th ed.) Citation

Zaloga and Delf. US Field Artillery of World War II. Osprey, 2007.

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