APA (7th ed.) Zitazioa
Longley, P. A. (2005). Geographical Information Systems: Principles, Techniques, Management, and Applications (2a edición.). Wiley.
Chicago Style (17th ed.) Zitazioa
Longley, Paul A. Geographical Information Systems: Principles, Techniques, Management, and Applications. 2a edición. Hoboken, EUA: Wiley, 2005.
MLA (9th ed.) Zitazioa
Longley, Paul A. Geographical Information Systems: Principles, Techniques, Management, and Applications. 2a edición. Wiley, 2005.
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