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Dyfyniad Arddull ChicagoTickoo, Sham. AutoCAD 2005: A Problem-Solving Approach. United States: Thomson Delmar Learning, 2005.
Dyfyniad MLATickoo, Sham. AutoCAD 2005: A Problem-Solving Approach. United States: Thomson Delmar Learning, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.