"College en portefeuille" [Members and tasks of the executive board] (in Dutch). Gemeente Brunssum. Archived from the original on 10 October 2013. Retrieved 14 October 2013.
"College en portefeuille" [Members and tasks of the executive board] (in Dutch). Gemeente Brunssum. Archived from the original on 10 October 2013. Retrieved 14 October 2013.