Peterson, G. (2012). Cartographer's Toolkit: Colers, Typography, Patterns. PetersonGIS.
Chicago Style (17. basım) AtıfPeterson, Gretchen. Cartographer's Toolkit: Colers, Typography, Patterns. Fort Collins, Colo.: PetersonGIS, 2012.
MLA (8th ed.) AtıfPeterson, Gretchen. Cartographer's Toolkit: Colers, Typography, Patterns. PetersonGIS, 2012.
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