एपीए उद्धरण

Clarke,Keith C. (2004). Geographic information systems and environmental modeling. Prentice hall India.

शिकागो स्टाइल उद्धरण

Clarke,Keith C. Geographic Information Systems and Environmental Modeling. New Delhi: Prentice hall India, 2004.

एमएलए उद्धरण

Clarke,Keith C. Geographic Information Systems and Environmental Modeling. Prentice hall India, 2004.