The Copernican System
<div class="fn value">
Unknown author<span style="display: none;">Unknown author</span></div>
1660<div style="display: none;">date QS:P571,+1660-00-00T00:00:00Z/9</div>
<cite class="book" style="font-style:normal">(2003) <i> The Science Book</i>, Weidenfeld &amp; Nicolson  <small></small></cite>