Cita APA (7th ed.)

Wilson, A. G., & Kirkby, M. J. (1980). Mathematics for Geographers and Planners (2nd ed.). Clarendon Press.

Cita Chicago (17th ed.)

Wilson, A. G., i M. J. Kirkby. Mathematics for Geographers and Planners. 2nd ed. Oxford: Clarendon Press, 1980.

Cita MLA (9th ed.)

Wilson, A. G., i M. J. Kirkby. Mathematics for Geographers and Planners. 2nd ed. Clarendon Press, 1980.