"Schouderklopje van de Guide" [Pat on the shoulder from the Guide]. Provinciale Zeeuwse Courant (in Dutch). 12 June 1965. Retrieved 21 June 2014. p. 19
missethoreca.nl
Brandligt, Vivie (16 October 2007). "Historisch overzicht Michelinsterren 1957 t/m 1964" [Historic overview Michelin stars 1957-1964]. Misset Horeca (in Dutch). Retrieved 16 June 2014. (subscription required)
Brandligt, Vivie (16 October 2007). "Historisch overzicht Michelinsterren 1965 t/m 1970" [Historical overview Michelin stars 1965-1970]. Misset Horeca (in Dutch). Retrieved 16 June 2014. (subscription required)