Me pēnei te tohu i te whārangi:
Mark Derby, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/te-whakamarama-reo-a-tuhi-a-waha-hoki/media (accessed 4 October 2023)
He kōrero nā Mark Derby, i tāngia i te 22 Oct 2014