Angels and Monsters: Male and Female Sopranos in the Story of Opera by Richard Somerset-Ward

Directing the Choral Music Program by Kenneth H. Phillips

The Cambridge Companion to Singing by John Potter

Solutions for Singers: Tools for Every Performer and Teacher  by Richard Miller

Singing and Imagination: A Human Approach to a Great Musical Tradition  by Thomas Hemsley

Dynamics of the Singing Voice  by Meribeth Bunch

Singing For Dummies® by Pamelia S. Phillips

On the Art of Singing by Richard Miller