Longley, P. A., & ...[et al.]. (2005). Geographical information systems: Principles, techniques, management and applications (2nd ed.). Johnwiley & Sons.
Chicago-tyylinen lähdeviittausLongley, Paul A., ja ...[et al.]. Geographical Information Systems: Principles, Techniques, Management and Applications. 2nd ed. New Jersey: Johnwiley & Sons, 2005.
MLA-viiteLongley, Paul A., ja ...[et al.]. Geographical Information Systems: Principles, Techniques, Management and Applications. 2nd ed. Johnwiley & Sons, 2005.
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