Me pēnei te tohu i te whārangi:

C. B. Malone. Links and sources for 'Hocton, Appo', Dictionary of New Zealand Biography, first published in 1990. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/1h31/hocton-appo/sources (accessed 14 May 2024)