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Dyfyniad Arddull ChicagoTher, Philipp, and Charlotte Hughes-Kreutzmuller. Europe Since 1989: A History. Princeton, New Jersey: Princeton University Press, 2016.
Dyfyniad MLATher, Philipp, and Charlotte Hughes-Kreutzmuller. Europe Since 1989: A History. Princeton University Press, 2016.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.