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** Clark Hugh, Thomas Wormull, A Short and Easy Introduction to Heraldry, in Two Parts, 1788, page221, oclc:11569171, London
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*{{Cite | last = Fox-Davies | first = Arthur Charles | authorlink = :en:Arthur Charles Fox-Davies
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** John_Strong_Perry_Tatlock, The dragons of Wessex and Wales, Speculum, Medieval Academy of America, 1933, volume8, issue:2, pages223-235, issn:00387134, Cambridge
** The Heraldry Society, 2008, HERALDRY OF RECENT KNIGHTS 1, The Heraldry GAZETTE new sweries, issue:110, page5, The Heraldry Society, London, issn:0437-2980, oclc:12857133, http://www.theheraldrysociety.com/publications/heraldrygazette/2008-Dec.pdf