APA (7th ed.) Citation

Williamson, G., & Embleton, G. (2006). World War II German Police Units. Osprey.

Chicago Style (17th ed.) Citation

Williamson, Gordon, and Gerry Embleton. World War II German Police Units. Oxford [u.a.]: Osprey, 2006.

MLA (8th ed.) Citation

Williamson, Gordon, and Gerry Embleton. World War II German Police Units. Osprey, 2006.

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