Me pēnei te tohu i te whārangi:
Te Ahukaramū Charles Royal, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/te-orokohanga-mai-o-te-ao/media (accessed 29 November 2023)
He kōrero nā Te Ahukaramū Charles Royal, i tāngia i te 8 Feb 2005