APA (7th ed.) Citation

Wall, J., & Caldwell, R. (1991). The Singer's voice: Breath. Pst...Inc.

Chicago Style (17th ed.) Citation

Wall, Joan, and Robert Caldwell. The Singer's Voice: Breath. Dallas, Tex: Pst...Inc, 1991.

MLA (9th ed.) Citation

Wall, Joan, and Robert Caldwell. The Singer's Voice: Breath. Pst...Inc, 1991.