AutoCad Release 12; reference manual.

MLA

Autocad Release 12; Reference Manual. Neuchatel: Autodesk BV, 1992.

APA

(1992). AutoCad Release 12; reference manual. Neuchatel: Autodesk BV.

Chicago

Autocad Release 12; Reference Manual. Neuchatel: Autodesk BV, 1992.