Me pēnei te tohu i te whārangi:

A. Agnew and R. Agnew. Related biographies for 'Keesing, Henry', Dictionary of New Zealand Biography, first published in 1990, updated o Oketopa, 2017. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/1k5/keesing-henry/related-biographies (accessed 20 April 2024)