Autodesk, I. (1990). AutoCAD Release 12: Reference manual. Autodesk Inc.
Chicago Style (17th ed.) CitationAutodesk, Inc. AutoCAD Release 12: Reference Manual. Autodesk Inc, 1990.
MLA (8th ed.) CitationAutodesk, Inc. AutoCAD Release 12: Reference Manual. Autodesk Inc, 1990.
Warning: These citations may not always be 100% accurate.