Me pēnei te tohu i te whārangi:

Doreen Gilchrist. Related biographies for 'Poppelwell, Dugald Louis', Dictionary of New Zealand Biography, first published in 1996. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/3p31/poppelwell-dugald-louis/related-biographies (accessed 25 April 2024)