Dyfyniad APA
Rubin, B. M. (1987). Secrets of state: The State Department and the struggle over U.S. foreign policy. Oxford University Press.
Dyfyniad Arddull Chicago
Rubin, Barry M. Secrets of State: The State Department and the Struggle over U.S. Foreign Policy. New York ; Oxford: Oxford University Press, 1987.
Dyfyniad MLA
Rubin, Barry M. Secrets of State: The State Department and the Struggle over U.S. Foreign Policy. Oxford University Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.