Leach James A. (2010). AutoCAD 2010 Instructor (McGraw-Hill Graphics). NewYork: Mc Graw-Hill.
Trích dẫn kiểu ChicagoLeach James A. AutoCAD 2010 Instructor (McGraw-Hill Graphics). NewYork: Mc Graw-Hill, 2010.
Deismireacht MLALeach James A. AutoCAD 2010 Instructor (McGraw-Hill Graphics). NewYork: Mc Graw-Hill, 2010.
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