Crouch, D.: (Cambridge, 1986). Crouch, D.: (London, 2000). King, E.: «Mountsorrel and its region in King Stephen's Reign», , 44 (1980), 1-10. , red. J. Storey, J. Bourne and R. Buckley (Leicester, 2006). Powicke, F. Maurice & Fryde, E. B.: 2nd. red. London: Royal Historical Society 1961 British Library ms .