Bernhardsen, T. (2011). Geographic information systems: An introduction (3rd ed.). Wiley.
Čikaški stil citiranjaBernhardsen, Tor. Geographic Information Systems: An Introduction. 3rd ed. New Delhi: Wiley, 2011.
MLA način citiranjaBernhardsen, Tor. Geographic Information Systems: An Introduction. 3rd ed. Wiley, 2011.
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