More suggestions and sources
Belich, James. Making peoples: a history of the New Zealanders. Auckland: Penguin, 1996.
Bell, Leonard. The Maori in European art: a survey of the representation of the Maori by European artists from the time of Captain Cook to the Present day. Wellington: Reed, 1980.
Phillips, J. O. C. ‘Musings in Maoriland – or was there a Bulletin school in New Zealand.’ Historical Studies, 20, no. 81 (October 1983): 520–535.
Salmond, Anne. Two worlds: first meetings between Maori and Europeans. Auckland: Viking, 1991.