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Dyfyniad Arddull ChicagoGreen, Nicholas, Trevor C. Hartley, and John A. Usher. The Legal Foundations of the Single European Market. Oxford: Oxford University Press, 1991.
Dyfyniad MLAGreen, Nicholas, et al. The Legal Foundations of the Single European Market. Oxford University Press, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.