More links and websites
On the Ministry of Justice site, this article includes a section on traditional Māori concepts.
More suggestions and sources
Barlow, Cleve. Tikanga whakaaro: key concepts in Māori culture. Auckland: Oxford University Press, 1994.
Marsden, Māori. ‘God, man and universe: a Maori view.’ In Te ao hurihuri: aspects of Maoritanga, edited by Michael King, 118–138. Auckland: Reed, 1992.
Marsden, Māori. The woven universe: selected writings of Rev. Māori Marsden, edited by Te Ahukaramū Charles Royal. Ōtaki: Estate of Rev. Māori Marsden, 2003.