Caldwell, D. (2011). Vortex of conflict: U.S. policy toward Afghanistan, Pakistan, and Iraq. Stanford Security Studies.
Chicago-referens (17:e uppl.)Caldwell, Dan. Vortex of Conflict: U.S. Policy Toward Afghanistan, Pakistan, and Iraq. Stanford, CA: Stanford Security Studies, 2011.
MLA-referens (9:e uppl.)Caldwell, Dan. Vortex of Conflict: U.S. Policy Toward Afghanistan, Pakistan, and Iraq. Stanford Security Studies, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.