Kuhlman., Hans. “Edgar M. Horwood & Ronald R. Boyce El Al. (Appendix Ved L. D. Goldberg): Studies of the Central Business District and Urban Freeway Development”. Geografisk Tidsskrift 59 (januar 1, 1960). Set december 7, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/46602.