Chang, K. (2008). Introduction to geographic information systems (4th ed.). McGraw-Hill.
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Dyfyniad Arddull Chicago
Chang, Kang-Tsung. Introduction to Geographic Information Systems. 4th ed. New York : New Delhi: McGraw-Hill, 2008.
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Dyfyniad MLA
Chang, Kang-Tsung. Introduction to Geographic Information Systems. 4th ed. McGraw-Hill, 2008.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.