Ikenberry, G. J. (1988). Reasons of State: Oil Politics and the Capacities of American Government. Cornell University Press.
Dyfyniad Arddull ChicagoIkenberry, G. John. Reasons of State: Oil Politics and the Capacities of American Government. Ithaca: Cornell University Press, 1988.
Dyfyniad MLAIkenberry, G. John. Reasons of State: Oil Politics and the Capacities of American Government. Cornell University Press, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.