एपीए उद्धरण

Venugopal, K. (2008). Engineering drawing and graphics (Ed.5.). New age international.

शिकागो स्टाइल उद्धरण

Venugopal, K. Engineering Drawing and Graphics. Ed.5. New Delhi: New age international, 2008.

एमएलए उद्धरण

Venugopal, K. Engineering Drawing and Graphics. Ed.5. New age international, 2008.