APA-ийн эшлэл(7 дахь хэвлэлт)

Caldwell, D. (2011). Vortex of conflict: U.S. policy toward Afghanistan, Pakistan, and Iraq. Stanford Security Studies.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Caldwell, Dan. Vortex of Conflict: U.S. Policy Toward Afghanistan, Pakistan, and Iraq. Stanford, CA: Stanford Security Studies, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Caldwell, Dan. Vortex of Conflict: U.S. Policy Toward Afghanistan, Pakistan, and Iraq. Stanford Security Studies, 2011.