Cita APA (7th ed.)

DeMERS, M. N. (1997). Fundamentals of geographic information systems. John Wiley and Sons.

Cita Chicago (17th ed.)

DeMERS, Michael N. Fundamentals of Geographic Information Systems. New York: John Wiley and Sons, 1997.

Cita MLA (9th ed.)

DeMERS, Michael N. Fundamentals of Geographic Information Systems. John Wiley and Sons, 1997.