Me pēnei te tohu i te whārangi:

Janet C. Angus. Related biographies for 'Johnstone, James Armour', Dictionary of New Zealand Biography, first published in 1993. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/2j7/johnstone-james-armour/related-biographies (accessed 13 May 2024)