Me pēnei te tohu i te whārangi:
Paul Williams, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/limestone-country/media (accessed 29 March 2024)
He kōrero nā Paul Williams, i tāngia i te 24 Sep 2007