Hartmann, Thomas, and Tejo Spit. 2013. “Van Der Cammen, Hans; De Klerk, Len; Dekker, Gerhard; Witsen, Peter Paul (2013): The Selfmade Land: Culture and Evolution of Urban and Regional Planning in the Netherlands”. Raumforschung Und Raumordnung | Spatial Research and Planning 71 (5): 437–438. https://doi.org/10.1007/s13147-013-0234-y.