Douglas, 1964, p. 192. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.
Douglas, 1964, pp. 204-205. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.
Douglas, 1964, pp. 205-206. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.
Douglas, 1964, p. 212. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.
Douglas, 1964, pp. 214-215. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.
Douglas, 1964, p. 221-222. Douglas, David C. (1964). William the Conqueror: The Norman Impact Upon England. Berkeley: University of California Press. OCLC399137.