Me pēnei te tohu i te whārangi:
John Singleton, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/reserve-bank/media (accessed 29 March 2024)
He kōrero nā John Singleton, i tāngia i te 20 Jun 2012