Sopranos of today studies of twenty-five opera singers.

Ngā taipitopito rārangi puna kōrero
Kaituhi matua:	Rosenthal, Harold D.
Hōputu:	Pukapuka
Reo:	Ingarihi
I whakaputaina:	London J. Calder [1956].
Ngā marau:	Singers.