(EN) William Page, J.W.Willis-Bund, The city of Worcester: Introduction and borough, su British History Online. URL consultato il 4 luglio 2014.
«On 7 November 1139 the city was taken by the garrison of Gloucester. An attack had been anticipated, but no commander of rank was in the town, and the enemy, after a repulse before an outwork which protected the approaches from the south, broke in through the northern quarter. A part of the city was burned, the whole was sacked, and many of the citizens were carried off for ransom, but no attempt was made to hold the place for the empress, and within a week it was reoccupied for the king [...].»
