| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Die befreite Stimme: Methodik und Aspekte der Gesangskunst | 978-3-7959-0654-2 (3-7959-0654-7) | 1993 | |
| The great confession: From Aksakov and De Quincey to Tolstoy and Proust | 978-0-582-12598-8 (0-582-12598-7) | 1973 | |
| Unlocking Your Voice: Freedom to Sing | 978-1-871082-70-8 (1-871082-70-6) | 1999 |
Kahn & Averill · Longman · Noetzel, Florian