Bernhardsen, T. (1999). Geographic information systems: An introduction (2nd ed.). John Wiley.
Style de citation ChicagoBernhardsen, Tor. Geographic Information Systems: An Introduction. 2nd ed. New York: John Wiley, 1999.
Style de citation MLABernhardsen, Tor. Geographic Information Systems: An Introduction. 2nd ed. John Wiley, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.