Me pēnei te tohu i te whārangi:
Janet Wilmshurst, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/human-effects-on-the-environment/media (accessed 29 March 2024)
He kōrero nā Janet Wilmshurst, i tāngia i te 24 Sep 2007