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(原始内容存档于2021-03-30). Jane Flanagan. SAS joins hunt for missing British contractor Phil Mawer after Mozambique attack. The Times. 31 March 2021 [2021-04-06]
objectId=3988&partId=1 [失效連結] Lucas, Charles Thomas (1820–1895), public works contractor. 《牛津国家人物传记大辞典》 線上版. 牛津大學出版社. 含有連結內容需訂閱查看的頁面 (link) 需要订阅或英国公共图书馆会员资格 [1]