Cita APA

Klein, J. J., & Schjeide, O. A. (2007). Singing technique: How to avoid vocal trouble (Second edition.). Tustin, California: National Music Publishers.

Citación estilo Chicago

Klein, Joseph J., y Ole Arne Schjeide. Singing Technique: How to Avoid Vocal Trouble. Second edition. Tustin, California: National Music Publishers, 2007.

Cita MLA

Klein, Joseph J., y Ole Arne Schjeide. Singing Technique: How to Avoid Vocal Trouble. Second edition. Tustin, California: National Music Publishers, 2007.