>F LE SAUX, Layamon's Brut. The Poem and its Sources, Arthurian Studies, 19, Woodbridge, D.S. Brewer, 1989
>Mark N. Taylor, Aultre manier de language: English Usage as a Political Act in Thirteenth-Century England, Medieval Multilingualism The Francophone World and its Neighbours, Medieval texts and cultures of Northern Europe, 20, Turnhout, Brepols, 2010 : p. 107-126
>BARBARA GALL VON METTENHEIM, Marie de France and Layamon. Cultural subversives, 1993