Me pēnei te tohu i te whārangi:
Geoff Irwin, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/nga-heke-i-te-wai-nui/media (accessed 10 May 2024)
He kōrero nā Geoff Irwin, i tāngia i te 8 Feb 2005, reviewed & revised 8 Feb 2017