एपीए उद्धरण

Blockley, D. (2010). Bridges: :the science and art of the world's most inspiring structures. Oxford university.

शिकागो स्टाइल उद्धरण

Blockley, David. Bridges: :the Science and Art of the World's Most Inspiring Structures. Oxford: Oxford university, 2010.

एमएलए उद्धरण

Blockley, David. Bridges: :the Science and Art of the World's Most Inspiring Structures. Oxford university, 2010.