Me pēnei te tohu i te whārangi:
Nigel Roberts, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/antarctica-and-new-zealand/media (accessed 8 June 2023)
He kōrero nā Nigel Roberts, i tāngia i te 20 Jun 2012