Great Singers on Great Singing: A Famous Opera Star Interviews 40 Famous Opera Singers on the Technique of Singing (Limelight)

The Four Voices of Man

Bel Canto: A Theoretical and Practical Vocal Method (Dover Books on Music)

The Inner Voice: The Making of a Singer

Respect for Acting

On the Art of Singing

Master Singers: Advice from the Stage

The Naked Voice: A Wholistic Approach to Singing

The technics of bel canto

Song: A Guide to Art Song Style and Literature

Daily Exercises in Singing: Vocal Method (Kalmus Edition)