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Dyfyniad Arddull ChicagoHufbauer, Gary Clyde. Europe 1992: An American Perspective. Washington, D.C: Brookings Institution, 1990.
Dyfyniad MLAHufbauer, Gary Clyde. Europe 1992: An American Perspective. Washington, D.C: Brookings Institution, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.