Rizzo, R. (1978). The voice as an instrument (2d ed.). Indianapolis: Bobbs-Merrill Educational Pub..
Citación estilo ChicagoRizzo, Raymond. The Voice As an Instrument. 2d ed. Indianapolis: Bobbs-Merrill Educational Pub., 1978.
Cita MLARizzo, Raymond. The Voice As an Instrument. 2d ed. Indianapolis: Bobbs-Merrill Educational Pub., 1978.
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