阿德莉萨 (诺曼底)Dictionary of National Biography 1. London: Smith, Elder & Co: 137. 1885. this entry cites: Freeman, Edward Augustus. The History of the Norman Conquest of England
理查德 (贝尔奈公爵)而亨利当时只有十二三岁,也被认为有可能是清白的。 David Bates, William I, Oxford Online Dictionary of National Biography,2004. [2020-02-25]. (原始内容存档于2021-03-06). Orderic Vitalis