Tucker, R. W. (1968). Nation or empiren The debate over American foreign policy. Johns Hopkins Press.
Dyfyniad Arddull ChicagoTucker, Robert W. Nation or Empiren The Debate over American Foreign Policy. Baltimore: Johns Hopkins Press, 1968.
Dyfyniad MLATucker, Robert W. Nation or Empiren The Debate over American Foreign Policy. Johns Hopkins Press, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.