Gaya APA
Leach, J, A. (2006).
Auto Cad 2006 companion : essentials of auto cad plus solid modeling .
Boston:
McGraw-Hill.
Gaya MLA
Leach, James, A..
"Auto Cad 2006 companion : essentials of auto cad plus solid modeling".
Boston:
McGraw-Hill,
2006.
Text.