"Postcodetool for 5411EA". Actueel Hoogtebestand Nederland (in Dutch). Het Waterschapshuis. Archived from the original on 21 September 2013. Retrieved 29 May 2014.
"Samenstelling college" [Members of the board] (in Dutch). Gemeente Landerd. Archived from the original on 26 December 2018. Retrieved 29 May 2014.
web.archive.org
"Postcodetool for 5411EA". Actueel Hoogtebestand Nederland (in Dutch). Het Waterschapshuis. Archived from the original on 21 September 2013. Retrieved 29 May 2014.
"Samenstelling college" [Members of the board] (in Dutch). Gemeente Landerd. Archived from the original on 26 December 2018. Retrieved 29 May 2014.