Me pēnei te tohu i te whārangi:

Peter J. Lineham. Related biographies for 'Pettit, William Haddow', Dictionary of New Zealand Biography, first published in 1996. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/3p24/pettit-william-haddow/related-biographies (accessed 3 May 2024)