Group training techniques

Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Berger, Melvyn Louis
Ētahi atu kaituhi: Berger, Pam J.
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: [Epping] Gower Press [c1972].
Rangatū:A Gower Press special study
Ngā marau: