| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Great Singers on Great Singing: A Famous Opera Star Interviews 40 Famous Opera Singers on the Technique of Singing | 978-0-87910-025-4 (0-87910-025-7) | 2004 |
| The Four Voices of Man | 978-0-87910-099-5 (0-87910-099-0) | 2004 |
| This Is My Story, This Is My Song | 978-0-8007-0313-4 (0-8007-0313-8) | 1969 |