Economic activity/

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Harcourt, G.C. And others
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Cambridge: C.U.P, c1967.
Ngā marau:
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!
Whakaahuatanga
Whakaahuatanga ōkiko:x, 323p. bibliog. diag. tab.