APA (7th ed.) Citation

Gregg, H., Rothstein, H. S., & Arquilla, J. (2010). The Three Circles of War: Understanding the Dynamics of Conflict in Iraq.

Chicago Style (17th ed.) Citation

Gregg, Heather, Hy S. Rothstein, and John Arquilla. The Three Circles of War: Understanding the Dynamics of Conflict in Iraq. 2010.

MLA (9th ed.) Citation

Gregg, Heather, et al. The Three Circles of War: Understanding the Dynamics of Conflict in Iraq. 2010.