Παραπομπή APA

Clarke, K. C. (2001). Getting started with geographic information systems (3rd ed.). Upper Saddle River, NJ.: Prentice-Hall.

Παραπομπή Chicago Style

Clarke, Keith C. Getting Started With Geographic Information Systems. 3rd ed. Upper Saddle River, NJ.: Prentice-Hall, 2001.

Παραπομπή MLA

Clarke, Keith C. Getting Started With Geographic Information Systems. 3rd ed. Upper Saddle River, NJ.: Prentice-Hall, 2001.

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