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Lua i Stíl Chicago (17ú heag.)Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 4a ed.
Lua MLA (8ú heag.)Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 4a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.