Leach, J. A. (2007). AutoCAD 2007 instructor: A student guide to complete coverage of AutoCAD's comands and features. McGraw-Hill Higher Education.
Cita Chicago (17th ed.)Leach, James A. AutoCAD 2007 Instructor: A Student Guide to Complete Coverage of AutoCAD's Comands and Features. Boston: McGraw-Hill Higher Education, 2007.
Cita MLA (9th ed.)Leach, James A. AutoCAD 2007 Instructor: A Student Guide to Complete Coverage of AutoCAD's Comands and Features. McGraw-Hill Higher Education, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.