DeMers, M. N. (2000). Fundamentals of geographic information systems (2nd ed.). J. Wiley.
Cita Chicago (17th ed.)DeMers, Michael N. Fundamentals of Geographic Information Systems. 2nd ed. New York: J. Wiley, 2000.
Cita MLA (9th ed.)DeMers, Michael N. Fundamentals of Geographic Information Systems. 2nd ed. J. Wiley, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.