Me pēnei te tohu i te whārangi:
Peter Walls, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/classical-musicians/media (accessed 24 September 2023)
He kōrero nā Peter Walls, i tāngia i te 22 Oct 2014