Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.