Sir James Augustus Henry Murray, Henry Bradley, Sir William Alexander Craigie et Charles Talbut Onions, Oxford English Dictionary, vol. 2, (lire en ligne), p. 1277
Emma Mason, The Hero's Invincible Weapon : an Aspect of Angevin Propaganda, Christopher Harper-Bill et Ruth Harvey, , 180 p. (ISBN978-0-85115-265-3, lire en ligne)
Arthur Taylor, The Glory of Regality : An Historical Treatise of the Anointing and Crowning of the Kings and Queens of England, R. and A. Taylor, , 72–74 p. (lire en ligne)
James Robinson Planché, A Cyclopaedia of Costume Or Dictionary of Dress, Chatto and Windus, , 157–158 p. (lire en ligne)