APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.