Me pēnei te tohu i te whārangi:

B. Dale Curham. Related biographies for 'Youren, Harold Wilfred', Dictionary of New Zealand Biography, first published in 2000. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/5y3/youren-harold-wilfred/related-biographies (accessed 19 April 2024)