Me pēnei te tohu i te whārangi:

Dorothy Ropiha. Related biographies for 'Friberg, Bror Erik', Dictionary of New Zealand Biography, first published in 1993. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/2f27/friberg-bror-erik/related-biographies (accessed 26 April 2024)