एपीए उद्धरण

Venugopal, K. (2001). Engineering drawing and graphics+ autocad. New Age.

शिकागो स्टाइल उद्धरण

Venugopal, K. Engineering Drawing and Graphics+ Autocad. New Delhi: New Age, 2001.

एमएलए उद्धरण

Venugopal, K. Engineering Drawing and Graphics+ Autocad. New Age, 2001.