Cita APA
Bernhardsen, T. (2002). Geographic information systems: An introduction (3rd ed.). John Wiley & Sons.
Citación estilo Chicago
Bernhardsen, Tor. Geographic Information Systems: An Introduction. 3rd ed. New Delhi: John Wiley & Sons, 2002.
Cita MLA
Bernhardsen, Tor. Geographic Information Systems: An Introduction. 3rd ed. John Wiley & Sons, 2002.
Warning: These citations may not always be 100% accurate.