(2000). Changing constitution (4th ed.). Oxford University press.
Dyfyniad Arddull ChicagoChanging Constitution. 4th ed. Oxford: Oxford University press, 2000.
Dyfyniad MLAChanging Constitution. 4th ed. Oxford University press, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.