↑Ernest Nègre, Toponymie générale de la France. 2. Formations non-romanes, Genevae, 1990, Librairie Droz, Vol. 2, p. 1012 / 18239.
↑Philippe le Bas, Dictionnaire encyclopédique de la France, Lutetiae, 1840, Firmin Didot frères éditeurs, T. II, p. 130.
↑Benedict of Peterborough, Gesta regis Henrici secundi Benedicti abbatis - Chronicle of the reigns of Henry II and Richard I A.D. 1169-1192, Londinii, 1867, Logmans,Green, Reader, and Dyer, vol. II, pp. 29, 40, 75, 263.
↑Richard Howlett, William (of Newburgh), Etienne de Rouen, Richard (of Hexham), Saint Aelred (of Rievaulx), Jordan Fantosme, Richard (of Devizes), Robert (de Torigni), Chronicles of the Reigns of Stephen, Henry II, and Richard I.: The chronicle of Robert of Torigni, abbot of the monastery of St. Michael-in-peril-of-the-sea, 1964, p. 373.
↑Louis-Georges Oudart Feudrix de Bréquigny,Georges-Jean Mouchet, Table chronologique des diplomes, chartes, titres et actes imprimés concernant l'histoire de France, Lutetiae, 1775, Imprimerie Royale, T. II, p. 488.