Brown 1955, p. 366 Brown, Reginald Allen (July 1955), "Royal Castle-Building in England, 1154–1216", The English Historical Review, 70 (276), Oxford University Press: 353–398, doi:10.1093/ehr/lxx.cclxxvi.353, JSTOR559071
Brown 1955, pp. 356, 368 Brown, Reginald Allen (July 1955), "Royal Castle-Building in England, 1154–1216", The English Historical Review, 70 (276), Oxford University Press: 353–398, doi:10.1093/ehr/lxx.cclxxvi.353, JSTOR559071
Brown 1955, p. 366 Brown, Reginald Allen (July 1955), "Royal Castle-Building in England, 1154–1216", The English Historical Review, 70 (276), Oxford University Press: 353–398, doi:10.1093/ehr/lxx.cclxxvi.353, JSTOR559071
Brown 1955, pp. 356, 368 Brown, Reginald Allen (July 1955), "Royal Castle-Building in England, 1154–1216", The English Historical Review, 70 (276), Oxford University Press: 353–398, doi:10.1093/ehr/lxx.cclxxvi.353, JSTOR559071