Ikenberry, G. J. (1988). Reasons of State: Oil Politics and the Capacities of American Government. Cornell University Press.
芝加哥风格引文Ikenberry, G. John. Reasons of State: Oil Politics and the Capacities of American Government. London: Cornell University Press, 1988.
MLA引文Ikenberry, G. John. Reasons of State: Oil Politics and the Capacities of American Government. Cornell University Press, 1988.
警告：这些引文格式不一定是100％准确.