| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Liebling Estelle Vocal Course For Lyric Tenor And Dramatic Tenor | 978-1-4950-1155-9 (1-4950-1155-0) | 1981 | Estelle Liebling |
| The Estelle Liebling Vocal Course: Baritone/Bass | 978-1-4950-1156-6 (1-4950-1156-9) | 1981 | " |
| The Estelle Liebling Vocal Course: Soprano: Coloratura, Lyric and Dramatic | 978-1-4950-1154-2 (1-4950-1154-2) | 1981 | " |