Sources and Further Reading
- Michalak, Arkadiusz. 2011. “‘From Every Side Armed with a Cross Sign’. A Crusader’s (?) Sword from the Collection of the Hungarian National Museum in Budapest.” Studia Universitatis Cibiniensis. Series Historica, January, 53–71.
- Bazin-Tacchella, Sylvie. “Actes De Pierre De Dreux, Duc De Bretagne (1214-1237).” Perspectives Médiévales. Revue D'épistémologie Des Langues Et Littératures Du Moyen Âge, Société De Langues Et Littératures Médiévales D'oc Et D'oïl, 1 Jan. 2016, https://journals.openedition.org/peme/10507?lang=en.
- Jones, Michael. “[p. 681] The Chancery of the Duchy of Brittany from Peter Mauclerc to Duchess Anne, 1213–1514 (Tafel Xxii–Xxix)1.” Éditions En Ligne De L'école Des Chartes, http://elec.enc.sorbonne.fr/cid/cid1983/art_30.
- A Treatise on Heraldry, British and Foreign: With English and French Glossaries, Volume 1, John Woodward, George Burnett
- Lacy, Norris J. “Arthur’s Ermine Arms.” Arthuriana 21, no. 4 (2011): 42–52.
- Tyson, Jeff. “How Sword Making Works.” HowStuffWorks Science, HowStuffWorks, 23 Nov. 2022, https://science.howstuffworks.com/sword-making.htm.
- Metropolitan Museum of Art. “Sword Pommel with the Arms of Pierre De Dreux (Ca. 1187–1250), Duke of Brittany and Earl of Richmond.” Metmuseum.org, https://www.metmuseum.org/art/collection/search/27619.
- La Rocca, Donald J. "Sword and Dagger Pommels Associated with the Crusades: Part I." Metropolitan Museum Journal (2011), pp. 135–36.
- Dundas, Roger. "Pommel: A Crusaders Sword." Arms Cavalcade: Journal of the Antique Arms Collectors Society of Australia (July 2016), p. 27
- “House of Dreux Coat of Arms.” WappenWiki, http://www.wappenwiki.org/index.php/House_of_Dreux.
- “House of Montfort-Brittany.” WappenWiki, https://wappenwiki.org/index.php/House_of_Montfort-Brittany.
- “House of Dreux-Brittany.” WappenWiki, https://wappenwiki.org/index.php/House_of_Dreux-Brittany.