van den Akker, Pieter. "Informatie over de Tour de France van 1939" [Information about the Tour de France from 1939]. TourDeFranceStatistieken.nl (in Dutch). Archived from the original on 2 March 2019. Retrieved 2 March 2019.
van den Akker, Pieter. "Informatie over de Tour de France van 1939" [Information about the Tour de France from 1939]. TourDeFranceStatistieken.nl (in Dutch). Archived from the original on 2 March 2019. Retrieved 2 March 2019.