He whakaaturanga anō
Rārangi pukapuka
Obit. Proceedings of the Royal Society of New Zealand 109 (1980–81): 16–21
‘Roger Duff puts life into city museum’. Christchurch Star. 5 Aug. 1976
Who’s who in New Zealand. Wellington, 1978
Tāngia te kōrero katoa
Tāngia te kōrero katoa