1. Giles Constable, "The Second Crusade as Seen by Contemporaries," Traditio 9 (1953), pp. 225-28
2. Nikolas Jaspert, "Capta est Dertosa clavis Christianorum: Tortosa and the Crusades," in The Second Crusade: Scope and Consequences, ed. Jonathan Phillips and Martin Hoch (Manchester, 2001), pp. 90-100.
3. Caffaro di Rustico, De captione Almerie et Tortuose, ed. Antonio Ubieto Arteta (Valencia, 1973), p. 32.
4. Gesta Stephani, ed. and trans. K. R. Potter (Oxford, 1976), p. 127
5. Henry of Huntingdon, Historia Anglorum: The History of the English People, ed. and trans. Diana Greenway (Oxford, 1996), pp. 750-52. Neither text mentions anything to do with the siege and conquest.