The original uploader was <a href="https://en.wikibooks.org/wiki/User:Tbernhard" class="extiw" title="wikibooks:User:Tbernhard">Tbernhard</a> at <a href="https://en.wikibooks.org/wiki/" class="extiw" title="wikibooks:">English Wikibooks</a>.
BSD
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikibooks.org">en.wikibooks</a></span> to Commons by <a href="//commons.wikimedia.org/wiki/User:Adrignola" title="User:Adrignola">Adrignola</a> using <a href="https://iw.toolforge.org/commonshelper/" class="extiw" title="toollabs:commonshelper/">CommonsHelper</a>.