"2012 Annual Report"(PDF). Council on Foreign Relations (CFR.org). Diarsipkan(PDF) dari versi asli tanggal 2013-02-12. Diakses tanggal February 12, 2013.
"2012 Annual Report"(PDF). Council on Foreign Relations (CFR.org). Diarsipkan(PDF) dari versi asli tanggal 2013-02-12. Diakses tanggal February 12, 2013.