Systems of Frequency Curves.

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Hōputu: Pukapuka
I whakaputaina: Cambridge, C.U. Press. 1969.
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!