एपीए उद्धरण

John, K. C. (2009). Engineering graphics for Degree. P H I.

शिकागो स्टाइल उद्धरण

John, K C. Engineering Graphics for Degree. New Delhi: P H I, 2009.

एमएलए उद्धरण

John, K C. Engineering Graphics for Degree. P H I, 2009.