(1972). A text book of jurisprudence (4th ed.). Oxford University Press.
Dyfyniad Arddull ChicagoA Text Book of Jurisprudence. 4th ed. New Delhi: Oxford University Press, 1972.
Dyfyniad MLAA Text Book of Jurisprudence. 4th ed. Oxford University Press, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.