Παραπομπή APA

Worboys, M., & Duckham, M. (2004). GIS: A computing perspective (2nd ed.). CRC Press.

Παραπομπή Chicago Style

Worboys, Michael, και Matt Duckham. GIS: A Computing Perspective. 2nd ed. Boca Raton, Fla.: CRC Press, 2004.

Παραπομπή MLA

Worboys, Michael, και Matt Duckham. GIS: A Computing Perspective. 2nd ed. CRC Press, 2004.