↑OLYMPIC GAMES ART COMPETITION MEDALLISTS (Sivu 15) Art competitions at the Olympic Games. 2.5.2019. The Olympic Studies Centre/ Olympic Foundation for Culture and Heritage. Viitattu 31.10.2020. (englanniksi)
↑Killy, Walther & Vierhaus, Rudolf: ”Biographical Entries”, Dictionary of German biography, s. 542. Walter de Gruyter, 2011. ISBN 978-311-096-629-9. Google-kirjat (viitattu 31.10.2020). (englanniksi)