Ingrid Huygens

Ngāpuhi speaks : He Wakaputanga o Te Rangatiratanga o Nu Tireni and Te Tiriti o Waitangi : independent report : Ngāpuhi Nui Tonu Claim

S. M. Healy, Ingrid Huygens, Takawai Murphy, 2012 .

Language attitudes, ethnicity and social class in New Zealand

Ingrid Huygens, G. Vaughan, Graham Vaughan, 1983 .