Me pēnei te tohu i te whārangi:

W. A. Laxon. Related biographies for 'McGregor, Alexander', Dictionary of New Zealand Biography, first published in 1993. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/mi/biographies/2m6/mcgregor-alexander/related-biographies (accessed 19 April 2024)