Shewell, C. (2009). Voice work: Art and science in changing voices. Wiley, an imprint of John Wiley & Sons.
Chicago-referens (17:e uppl.)Shewell, Christina. Voice Work: Art and Science in Changing Voices. Chichester, West Sussex, United Kingdom ; [Hoboken]: Wiley, an imprint of John Wiley & Sons, 2009.
MLA-referens (9:e uppl.)Shewell, Christina. Voice Work: Art and Science in Changing Voices. Wiley, an imprint of John Wiley & Sons, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.