APA aipamena

DeMers, M. N. (2009). Fundamentals of geographic information systems (Forth edition.). Wiley.

Chicago Style aipamena

DeMers, Michael N. Fundamentals of Geographic Information Systems. Forth edition. Hoboken, NJ ; India: Wiley, 2009.

MLA aipamena

DeMers, Michael N. Fundamentals of Geographic Information Systems. Forth edition. Wiley, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.