Knorr, K. E. (1969). Contending approaches to international politics. Princeton University Press.
Dyfyniad Arddull ChicagoKnorr, Klaus Eugen. Contending Approaches to International Politics. Princeton, N.J: Princeton University Press, 1969.
Dyfyniad MLAKnorr, Klaus Eugen. Contending Approaches to International Politics. Princeton University Press, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.