1.
The Voice Book: Caring For, Protecting, and Improving Your Voice
by DeVore, Kate, Cookman, Starr
ISBN: 9781556528293
2.
Voice Book : Caring for, Protecting, and Improving Your Voice
by DeVore, Kate, Cookman, Starr
ISBN: 9781641603300
3.
The Voice Book: Caring For, Protecting, and Improving Your Voice
by Devore, Kate, Cookman, Starr
ISBN: 9781569763049