Nielsen., Niels. “W. P. D. Wightman: Science and the Renaissance. I—II. 327 Og 293 Sider. 15x23 Cm. Aberdeen University Studies No. 143—144. Oliver and Boyd, Edinburgh 1962. 42 Sh. Pr. Stk”. Geografisk Tidsskrift - Danish Journal of Geography, vol. 61, Jan. 1962, https://tidsskrift.dk/geografisktidsskrift/article/view/46724.