Michael the Archangel in fresco in Sant'Angelo in Formis abbey.
Unknown author<span style="display: none;">Unknown author</span>
11<sup>th</sup> century <div style="display: none;">date QS:P,+1050-00-00T00:00:00Z/7</div>
<cite class="book" style="font-style:normal" id="Reference-Ferté-1981">Ferté, Etienne (1981)      <i> L'art de Byzance</i>, <a href="https://en.wikipedia.org/wiki/en:Paris" class="extiw" title="w:en:Paris"><span title="capital and most populous city of France">Paris</span></a>:  L. Mazenod, pp. 220,221  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/2850880116" title="Special:BookSources/2850880116">2850880116</a>. </small></cite>