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Dyfyniad Arddull ChicagoFrey, David. AutoCAD 2005 and AutoCAD LT 2005: No Experience Required. Sybex, 2004.
Dyfyniad MLAFrey, David. AutoCAD 2005 and AutoCAD LT 2005: No Experience Required. Sybex, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.