Me pēnei te tohu i te whārangi:

J. B. Duncan. Related biographies for 'Teutenberg, Ferdinand Anton Nicolaus', Dictionary of New Zealand Biography, first published in 1993. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/2t37/teutenberg-ferdinand-anton-nicolaus/related-biographies (accessed 3 May 2024)