Ad van der Meer and Onno Boonstra, "Repertorium van Nederlandse gemeenten", KNAW, 2006. "KNAW > Publicaties > Detailpagina". Archived from the original on 2007-07-12. Retrieved 2009-12-03.
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Ad van der Meer and Onno Boonstra, "Repertorium van Nederlandse gemeenten", KNAW, 2006. "KNAW > Publicaties > Detailpagina". Archived from the original on 2007-07-12. Retrieved 2009-12-03.