Me pēnei te tohu i te whārangi:
Paddy Ryan, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/snails-and-slugs/media (accessed 27 February 2021)
He kōrero nā Paddy Ryan, i tāngia i te 24 Sep 2007