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Dyfyniad Arddull ChicagoHill, Christopher J., Michael Smith, and Sophie Vanhoonacker. International Relations and the European Union. Fourth edition. Oxford: Oxford University Press, 2023.
Dyfyniad MLAHill, Christopher J., et al. International Relations and the European Union. Fourth edition. Oxford University Press, 2023.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
