<a href="//commons.wikimedia.org/wiki/User:Kudpung" title="User:Kudpung">Kudpung</a> and <a href="//commons.wikimedia.org/wiki/User:Deryck_Chan" title="User:Deryck Chan">Deryck Chan</a> at Wikimania 2013
<a href="//commons.wikimedia.org/wiki/User:Deryck_Chan" title="User:Deryck Chan">Deryck Chan</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>