Παραπομπή APA

Clarke, K. C. (1997). Getting started with geographic information systems. Upper Saddle River, NJ.: Prentice-Hall.

Παραπομπή Chicago Style

Clarke, Keith C. Getting Started With Geographic Information Systems. Upper Saddle River, NJ.: Prentice-Hall, 1997.

Παραπομπή MLA

Clarke, Keith C. Getting Started With Geographic Information Systems. Upper Saddle River, NJ.: Prentice-Hall, 1997.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.