Me pēnei te tohu i te whārangi:
Bruce Hamilton. Related biographies for 'Marks, Rowland Oswald Colin', Dictionary of New Zealand Biography, first published in 1998. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/4m39/marks-rowland-oswald-colin/related-biographies (accessed 30 March 2024)