Dworkin,R M. (1977). The philosophy of law. Oxford University Press.
Dyfyniad Arddull ChicagoDworkin,R M. The Philosophy of Law. London: Oxford University Press, 1977.
Dyfyniad MLADworkin,R M. The Philosophy of Law. Oxford University Press, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.