Cita APA (7th ed.)

Wall, J., & Caldwell, R. (1992). The singer's voice: A fiberoptic view of the vocal folds. Pst-- Inc.

Cita Chicago (17th ed.)

Wall, Joan, i Robert Caldwell. The Singer's Voice: A Fiberoptic View of the Vocal Folds. Dallas, Tex: Pst-- Inc, 1992.

Cita MLA (9th ed.)

Wall, Joan, i Robert Caldwell. The Singer's Voice: A Fiberoptic View of the Vocal Folds. Pst-- Inc, 1992.