Cita APA (7th ed.)

Rodenburg, P. (1992). The right to speak: Working with the voice. Methula.

Cita Chicago (17th ed.)

Rodenburg, Patsy. The Right to Speak: Working with the Voice. London: Methula, 1992.

Cita MLA (9th ed.)

Rodenburg, Patsy. The Right to Speak: Working with the Voice. Methula, 1992.