Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill; et al. "John Nicholas". Olympics at Sports-Reference.com. Sports Reference LLC. Archived from the original on 18 April 2020. Retrieved 15 May 2019. Full name: John Allen Nicholas
web.archive.org
Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill; et al. "John Nicholas". Olympics at Sports-Reference.com. Sports Reference LLC. Archived from the original on 18 April 2020. Retrieved 15 May 2019. Full name: John Allen Nicholas