Me pēnei te tohu i te whārangi:
Adrian Humphris, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/public-transport/media (accessed 30 March 2024)
He kōrero nā Adrian Humphris, i tāngia i te 11 Mar 2010, reviewed & revised 11 Mar 2016