APA (7th ed.) Citation

Engbrecht, S. (2011). America's covert warriors: Inside the world of private military contractors. Potomac Books.

Chicago Style (17th ed.) Citation

Engbrecht, Shawn. America's Covert Warriors: Inside the World of Private Military Contractors. Washington, D.C: Potomac Books, 2011.

MLA (9th ed.) Citation

Engbrecht, Shawn. America's Covert Warriors: Inside the World of Private Military Contractors. Potomac Books, 2011.

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