Me pēnei te tohu i te whārangi:
Robert Peden, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/farming-in-the-economy/media (accessed 22 May 2024)
He kōrero nā Robert Peden, i tāngia i te 24 Nov 2008