Theories of development/

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Preston, P. W.
Hōputu: Pukapuka
I whakaputaina: London Routledge & Kegan Paul C1982
Rangatū:1. Includes Bibliography: p 287-292, Index: p 293-296
Ngā marau:
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!