Reenberg, Anette. “A. G. Wilson & M. J. Kirby: MATHEMATICS FOR GEOGRAPHERS AND PLANNERS - 2.Ed. Oxford 1980, XV, 408 s., 24 Cm, Indb. £ 12.50, Paperback £ 6.95. Oxford University Press”. Geografisk Tidsskrift - Danish Journal of Geography, vol. 81, Jan. 1981, https://tidsskrift.dk/geografisktidsskrift/article/view/45169.