1. Blom, J. C. H., & Lamberts, E. (1993). Geschiedenis van de Nederlanden (p. 49). Rijswijk, The Netherlands: Universitaire Pers.
2. Boswell, C. (2009). The political uses of expert knowledge. Immigration police and social research. Cambridge, UK: Cambridge University Press.
3. Braudel, F. (1967). Capitalism and material life 1400–1800 (p. 404). London, UK: George Weidenfeld and Nicolson Ltd.
4. Brodeur, J-. P. (2010). The policing web. Oxford, UK: Oxford University Press.
5. Brodeur, J-. P., & Dupont, B. (2008). Introductory essay: The role of knowledge and networks in policing. In Williamson, T. (ed). The handbook of knowledge based policing: current conceptions and future directions. London, UK: J. Wiley & Sons, Ltd.