Leach, J. A. (2007). AutoCAD 2006 companion: Essentials of AutoCAD plus solid modeling. McGraw-Hill Higher Education.
Trích dẫn kiểu ChicagoLeach, James A. AutoCAD 2006 Companion: Essentials of AutoCAD Plus Solid Modeling. McGraw-Hill Higher Education, 2007.
Deismireacht MLALeach, James A. AutoCAD 2006 Companion: Essentials of AutoCAD Plus Solid Modeling. McGraw-Hill Higher Education, 2007.
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