Me pēnei te tohu i te whārangi:
Michael Roche, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/exotic-forestry/media (accessed 7 December 2023)
He kōrero nā Michael Roche, i tāngia i te 24 Nov 2008