\begin{thebibliography}{1}

\bibitem{geekfeminism2015}
Geek~Feminism Wiki.
\newblock Conference anti-harassment/policy.
\newblock
  \qrcode[hyperlink,padding,height=5cm]{http://geekfeminism.wikia.com/wiki/Conference_anti-harassment/Policy}\\
  \url{http://geekfeminism.wikia.com/wiki/Conference_anti-harassment/Policy}.

\end{thebibliography}