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Dyfyniad Arddull ChicagoPerkins, John. The Secret History of the American Empire: The Truth About Economic Hit Men, Jackals, and How to Change the World. New York: PLUME, 2007.
Dyfyniad MLAPerkins, John. The Secret History of the American Empire: The Truth About Economic Hit Men, Jackals, and How to Change the World. PLUME, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.