Cita APA (7a ed.)

Bernhardsen, T. (2014). Geographic Information Systems: An introduction. Wiley.

Cita Chicago Style (17a ed.)

Bernhardsen, Tor. Geographic Information Systems: An Introduction. New Delhi: Wiley, 2014.

Cita MLA (9a ed.)

Bernhardsen, Tor. Geographic Information Systems: An Introduction. Wiley, 2014.