Longhorn, R. A., & Blakemore, M. (2008). Geographic information: Value, pricing, production, and consumption. CRC Press.
Chicago Style (17. basım) AtıfLonghorn, Roger A., ve Michael Blakemore. Geographic Information: Value, Pricing, Production, and Consumption. Boca Raton: CRC Press, 2008.
MLA (9th ed.) AtıfLonghorn, Roger A., ve Michael Blakemore. Geographic Information: Value, Pricing, Production, and Consumption. CRC Press, 2008.
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