Self-portrait of user <a href="https://en.wikipedia.org/wiki/de:Benutzer:Mosmas" class="extiw" title="w:de:Benutzer:Mosmas">Mosmas</a> (<a href="https://en.wikipedia.org/wiki/en:Drawing" class="extiw" title="w:en:Drawing">Drawing</a>, undated)
<a href="//commons.wikimedia.org/wiki/User:Mosmas" title="User:Mosmas">Thomas Schoch</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span> – <a rel="nofollow" class="external free" href="http://www.retas.de/thomas/gallery/index.html">http://www.retas.de/thomas/gallery/index.html</a>