Clarke, K. C. (2001). Getting started with geographic information systems (3rd ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)Clarke, Keith C. Getting Started with Geographic Information Systems. 3rd ed. Upper Saddle River, N.J.: Prentice-Hall, 2001.
Cita MLA (8a ed.)Clarke, Keith C. Getting Started with Geographic Information Systems. 3rd ed. Prentice-Hall, 2001.
Precaución: Estas citas no son 100% exactas.