Me pēnei te tohu i te whārangi:

T. J. Hearn. Related biographies for 'Hartley, Horatio', Dictionary of New Zealand Biography, first published in 1990. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/1h11/hartley-horatio/related-biographies (accessed 26 April 2024)