De Jongh, Hans (6 December 2004). "Nog even wachten op btw-loket" [Some more waiting for a VAT office]. Het Financieele Dagblad (in Dutch). Retrieved 29 May 2021.
"Personalia 16-11-2018" [Personal details 16-11-2018]. Het Fiancieele Dagblad (in Dutch). 16 November 2018. Retrieved 29 May 2021.
"Proces-verbaal verkiezingsuitslag Tweede Kamer 2021" [Report of the election results House of Representatives 2021] (PDF). Dutch Electoral Council (in Dutch). 29 March 2021. pp. 14–15. Retrieved 21 December 2023.