Heman-Ackah, Y. D., Hawkshaw, M., & Sataloff, R. T. (2013). The voice: A medical guide for achieving and maintaining a healthy voice. Science & Medicine.
Chicago-referens (17:e uppl.)Heman-Ackah, Yolanda D., Mary Hawkshaw, och Robert Thayer Sataloff. The Voice: A Medical Guide for Achieving and Maintaining a Healthy Voice. Narberth, PA: Science & Medicine, 2013.
MLA-referens (9:e uppl.)Heman-Ackah, Yolanda D., et al. The Voice: A Medical Guide for Achieving and Maintaining a Healthy Voice. Science & Medicine, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.