Cita APA (7a ed.)

Rizzo, R. (1978). The voice as an instrument (2d ed.). Bobbs-Merrill Educational Pub..

Cita Chicago Style (17a ed.)

Rizzo, Raymond. The Voice as an Instrument. 2d ed. Indianapolis: Bobbs-Merrill Educational Pub., 1978.

Cita MLA (8a ed.)

Rizzo, Raymond. The Voice as an Instrument. 2d ed. Bobbs-Merrill Educational Pub., 1978.