== 參考文獻 ==
{{Reflist}}
== 外部連結 ==
{{Cite web |url =https://www.ottogroup.com/en/die-otto-group/Management.php |title =Supervisory and Executive Board. Otto Group's management| publisher = The Otto Group|language = zh | accessdate =2019-02-04 }}
[[Category:全球億萬富豪]]