Walker,David M. (1980). the Oxford companion to law. Clarendon Press.
Dyfyniad Arddull ChicagoWalker,David M. The Oxford Companion to Law. Oxford: Clarendon Press, 1980.
Dyfyniad MLAWalker,David M. The Oxford Companion to Law. Clarendon Press, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.