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<ul><li><cite class="book" style="font-style:normal" id="Reference-Von_Volborth-1985"><a href="https://nl.wikipedia.org/wiki/Carl-Alexander_von_Volborth" class="extiw" title="nl:Carl-Alexander von Volborth"> Von Volborth, Carl-Alexander</a>; D.J. Arriëns, transl. (1985)    (in Dutch)  <i> Heraldiek</i>, De Bataafsche Leeuw  <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/9067070351" title="Special:BookSources/9067070351">9067070351</a>. </small></cite></li></ul><ul><li><cite class="book" style="font-style:normal" id="Reference-Heim-1980"><a href="https://nl.wikipedia.org/wiki/Bruno_Bernard_Heim" class="extiw" title="nl:Bruno Bernard Heim"> Heim, Bruno Bernard</a>; A.H. Sijmons, transl. (1980)    (in Dutch)  <i> Kerkelijke heraldiek : van 1270 tot Johannes Paulus II</i>, Altiora-Averbode  <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/9031702161" title="Special:BookSources/9031702161">9031702161</a>. </small></cite></li></ul>