George .O. Head, J. D. H. (1992). 1000 AutoCAD Tips & Tricks. Galgotia Publications.
Chicago Edition CitationGeorge .O. Head, Jan Doster Head. 1000 AutoCAD Tips & Tricks. Galgotia Publications, 1992.
Deismireacht MLAGeorge .O. Head, Jan Doster Head. 1000 AutoCAD Tips & Tricks. Galgotia Publications, 1992.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.