Me pēnei te tohu i te whārangi:
Geoffrey Palmer, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/law/media (accessed 18 August 2022)
He kōrero nā Geoffrey Palmer, i tāngia i te 20 Jun 2012, updated 11 Oct 2016