Deaths of Members [online]. UK Parliament, 2021-08-18 [cit. 2022-12-19]. Dostupné online.
web.archive.org
SIMON - Deaths Announcements - Telegraph Announcements [online]. The Daily Telegraph, 2021-08-18 [cit. 2022-12-19]. Dostupné v archivu pořízeném dne 2022-12-12.