แหล่งที่มา WikiPedia: กีฬาโอลิมปิกซ้อน 1906 http://id.loc.gov/authorities/names/n85302726 http://d-nb.info/gnd/2145135-7 http://www.la84foundation.org/SportsLibrary/JOH/JO... //www.worldcat.org/identities/lccn-n85-302726 https://www.sports-reference.com/olympics/summer/1... https://web.archive.org/web/20120515105421/http://... https://web.archive.org/web/20200417040523/https:/... https://web.archive.org/web/20200417040614/https:/... https://viaf.org/viaf/245034417
