Me pēnei te tohu i te whārangi:

J. A. B. Crawford. Related biographies for 'Barrowclough, Harold Eric', Dictionary of New Zealand Biography, first published in 2000. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/5b12/barrowclough-harold-eric/related-biographies (accessed 20 April 2024)