Worboys, M., & Duckham, M. (2004). GIS: A computing perspective (2nd ed.). CRC Press.
Chicago Edition CitationWorboys, Michael, i Matt Duckham. GIS: A Computing Perspective. 2nd ed. Boca Raton, Fla.: CRC Press, 2004.
Cita MLAWorboys, Michael, i Matt Duckham. GIS: A Computing Perspective. 2nd ed. CRC Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.