Duff, J. M.. (1993). Integrated engineering drawing and modeling with VersaCAD: Fundamentals of applied 2D and 3D computer-aided drafting and design. Prentice-Hall.
Chicago Style (17th ed.) CitationDuff, Jon M. Integrated Engineering Drawing and Modeling with VersaCAD: Fundamentals of Applied 2D and 3D Computer-aided Drafting and Design. Englewood Cliffs, NJ: Prentice-Hall, 1993.
MLA (9th ed.) CitationDuff, Jon M. Integrated Engineering Drawing and Modeling with VersaCAD: Fundamentals of Applied 2D and 3D Computer-aided Drafting and Design. Prentice-Hall, 1993.
Warning: These citations may not always be 100% accurate.