K. Venugopal. Engineering Drawing + AutoCAD. New Age Books.
Chicago-čujuhus (17. p.)K. Venugopal. Engineering Drawing + AutoCAD. New Age Books.
MLA-čujuhus (9. p.)K. Venugopal. Engineering Drawing + AutoCAD. New Age Books.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.