Leach, J. A., & Dyer, J. H. (2008). AutoCAD 2008 companion: Essentials of AutoCAD plus solid modeling. McGraw-Hill.
Cita Chicago (17th ed.)Leach, James A., i James H. Dyer. AutoCAD 2008 Companion: Essentials of AutoCAD Plus Solid Modeling. New York: McGraw-Hill, 2008.
Cita MLA (9th ed.)Leach, James A., i James H. Dyer. AutoCAD 2008 Companion: Essentials of AutoCAD Plus Solid Modeling. McGraw-Hill, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.