1. Centraal Bureau voor de Statistiek (CBS). Bevolking; kerncijfers. February 22, 2017. http://statline.cbs.nl/statweb/publication/?vw=t&dm=slnl&pa=37296ned&d1=0-2,8-13,19-21,25-35,52-56,68&d2=0,10,20,30,40,50,60,64-65&hd=151214-1132&hdr=g1&stb=t. Accessed 28 February 2017.
2. Bond Van Automobielhandelaren en Garagehouders (BOVAG). Kerncijfers Tweewielers 2016. May 9, 2016. https://www.bovag.nl/BovagWebsite/media/BovagMediaFiles/Downloads/Kerncijfers-Tweewielers-2016-versie-200416B.pdf?ext=.pdf. Accessed 24 January 2017.
3. Active commuting and cardiovascular risk: a meta-analytic review;Hamer;Prev Med,2008
4. Eurosafe Injuries in the European Union. January, 2013. http://ec.europa.eu/health//sites/health/files/data_collection/docs/idb_report_2013_en.pdf. Accessed 15 December 2016.
5. Stichting Wetenschappelijk Onderzoek Verkeersveiligheid (SWOV). SWOV Fact Sheet Cyclists. August, 2013. http://www.swov.nl/rapport/Factsheets/UK/FS_Cyclists.pdf. Accessed 15 December 2016.