Me pēnei te tohu i te whārangi:
Paul Callister and Robert Didham, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/workforce-composition/media (accessed 20 April 2024)
He kōrero nā Paul Callister and Robert Didham, i tāngia i te 11 Mar 2010