Me pēnei te tohu i te whārangi:
John Dawson, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/conifer-broadleaf-forests/media (accessed 20 April 2024)
He kōrero nā John Dawson, i tāngia i te 24 Sep 2007