Knuts, Stijn; Delheye, Pascal (2015). "Sport, Work and the Professional Cyclist in Belgium, 1907–40". History Workshop Journal. 79 (1): 154–176. doi:10.1093/hwj/dbu022. S2CID162187026.
Knuts, Stijn; Delheye, Pascal (2015). "Sport, Work and the Professional Cyclist in Belgium, 1907–40". History Workshop Journal. 79 (1): 154–176. doi:10.1093/hwj/dbu022. S2CID162187026.