Wilson, A. G., & Kirkby, M. J. (1980). Mathematics for Geographers and Planners (2nd ed.). Clarendon Press.
Citace podle Chicago (17th ed.)Wilson, A. G., a M. J. Kirkby. Mathematics for Geographers and Planners. 2nd ed. Oxford: Clarendon Press, 1980.
Citace podle MLA (9th ed.)Wilson, A. G., a M. J. Kirkby. Mathematics for Geographers and Planners. 2nd ed. Clarendon Press, 1980.
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