More suggestions and sources
Asian New Zealanders. Wellington: Statistics New Zealand, 1995.
Liev, Man Hau. ‘Refugees from Cambodia, Laos and Vietnam.’ In Immigration and national identity in New Zealand, edited by Stuart William Greif, 99–132. Palmerston North: Dunmore, 1995.
South East Asian migrants in New Zealand: educational provision. Wellington: Dept of Education, 1982.