Le Moyen Âge - Calmette, Joseph. (OLS)http://semarc/name/22138; Gruber, J.-J. (OLS)http://semarc/name/22137; Grousset, René, <1885-1952>. (OLS)http://semarc/name/4557 (Atlas historique)
Keywords: Atlanti storici. (OLS)http://semarc/subject/3031; Medioevo - Storia. (OLS)http://semarc/subject/44562