Cotton Library MS Vespasian A XIX, folio 104
Unknown author<span style="display: none;">Unknown author</span>
<i>Sir Robbert Cotton as Collector</i> ed. by C. J. Wright, British Library: London 1997 <a href="//commons.wikimedia.org/wiki/Special:BookSources/07123-0358-8" title="Special:BookSources/07123-0358-8">ISBN 07123-0358-8</a> p. 244