Gaya APA

Leach, J, A. (2009). AutoCAD 2009 instructor : A student guide to complete coverage of AutoCAD's commands and features . New York: McGraw Hill Higher Education.

Gaya MLA

Leach, James, A.. "AutoCAD 2009 instructor : A student guide to complete coverage of AutoCAD's commands and features". New York: McGraw Hill Higher Education, 2009. Text.