E. L. · Erik Langdalen · Erik Linstrum
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Composer's Advocate: A Radical Orthodoxy for Musicans | 978-0-300-02887-4 (0-300-02887-3) | 1982 |
| The composer's advocate: A radical orthodoxy for musicians | 978-0-300-02427-2 (0-300-02427-4) | 1981 |