APA aipamena

Clarke, K. C. (1997). Getting started with geographic information systems. Prentice Hall.

Chicago Style aipamena

Clarke, Keith C. Getting Started with Geographic Information Systems. Upper Saddle River, N.J: Prentice Hall, 1997.

MLA aipamena

Clarke, Keith C. Getting Started with Geographic Information Systems. Prentice Hall, 1997.