Me pēnei te tohu i te whārangi:

D. B. Waterson. Related biographies for 'Doidge, Frederick Widdowson', Dictionary of New Zealand Biography, first published in 2000. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/5d20/doidge-frederick-widdowson/related-biographies (accessed 24 April 2024)