Me pēnei te tohu i te whārangi:

Fiona D. H. Pitt. Related biographies for 'Petrie, Donald', Dictionary of New Zealand Biography, first published in 1993. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/2p14/petrie-donald/related-biographies (accessed 24 April 2024)