APA (7th ed.) Citation

DeMers. (2009). Fundamentals of geographic information systems (Fourth ed.). John Wiley & Sons.

Chicago Style (17th ed.) Citation

DeMers. Fundamentals of Geographic Information Systems. Fourth ed. New Jersey: John Wiley & Sons, 2009.

MLA (8th ed.) Citation

DeMers. Fundamentals of Geographic Information Systems. Fourth ed. John Wiley & Sons, 2009.

Warning: These citations may not always be 100% accurate.