Me pēnei te tohu i te whārangi:

Penelope Jackson. Related biographies for 'Copeland, Ivy Margaret', Dictionary of New Zealand Biography, first published in 2000, updated o Hānuere, 2012. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/5c33/copeland-ivy-margaret/related-biographies (accessed 19 April 2024)